Photonics based solutions from ultraviolet to infrared

News of the Month - Case Stories

Infrared heat for classic cars

When restoring classic cars, not only bodywork and mechanical components must be renewed. The interior should shine too. Infrared emitters from Heraeus help to create custom-fit carpets using the original carpet shapes for classic cars. The infrared heat ensures that the rigid carpet blanks can be formed.

Custom Car Carpets sources original carpet moulds and provides customized carpets to fit exactly into restored classic cars. The carpet is bought as blanks and is extremely stiff and so needs softening before the moulding process to ensure optimum performance and finish. To investigate how this could best be done, the company asked Heraeus to carry out tests at their Neston Application Centre and, as a result, a fast response, medium wave infrared oven, consisting of three 34kW, modules with pyrometer control have been installed.

In operation, the carpet blanks are cut to size and then located in the oven. They are heated in 1 to 2 seconds to the required temperature, which can vary according to the type and pile density of the carpet, and on reaching the temperature, the modules are automatically switched off by the pyrometer. The softened carpet is then moulded before plastic protective sheet is welded to its base.

“The infrared system helps to ensure that moulding is carried out easily and efficiently,” is the verdict of the company. “The fact that the emitters are fast response also means that the process is very energy-efficient.”

Click here to learn more about infrared heat for the automotive industry.

Would you like more information? Contact us.

UV light facilitates environmental monitoring

Also in this summer we liked to be out in the fresh air when the weather was nice. However, since there are more pollutants in our environment, it is important that the upper limits are not exceeded so that there are no long-term effects on our health.

The quality of clean water and clean air is continuously monitored. For this, experts regularly carry out measurements at various points.

The quality of clean water and clean air is continuously monitored. For this, experts regularly carry out measurements at various points.

FiberLight® L3 is a unique and innovative light source module that can be easily integrated into portable spectroscopic instruments thanks to its small size and plug & play technology. It is used for environmental monitoring, but also in laboratory equipment, e.g. for sample cleaning.

For the first time, FiberLight® L3 combines state-of-the-art LED technology with a true broadband spectrum. This opens up completely new application fields and gives unexpected flexibility in analytical measurement. Qualitativ measurements (type of substances present) and quantitativ measurements (amount of a certain substance) are possible with only one instrument. The broadband spectrum is generated in a wavelength range from 250 to 490 nm using a single UV LED chip with special doping. This innovation avoids the disadvantages of earlier solutions with multi-LEDs. The above-average service life of more than 5,000 hours reduces maintenance and operating costs.

Click here to learn more about FiberLight® L3.

Would you like more information? Contact us.

UV disinfection for food packaging

Wether with the family or friends, on summer days nearly everyone loves spending time with the dearest ones. Having Barbeque is a popular break in everyday life. You find homemade salads on the table and sausages sizzle on the grill. Everyone enjoys the good weather and the delicious food in a relaxed atmosphere. But why can you still eat the meat after storing it for a longer time in the fridge? One reason for this is the sterilization of the packaging, the food is shrink-wrapped in.

In the food industry ultraviolet light is often used for disinfection. This way it is possible to kill harmful germs within a few seconds. Bacteria, yeasts and fungi on the grill sausage packaging are rendered harmless.

UVC disinfection is not only energy-efficient, but also an environmentally-friendly process. Adding chemicals can be avoided and the risk that unhealthy by-products occur is minimized. This does not affect the taste and smell of the sausages.

Click here to learn more about UVC disinfection of food packaging materials and surfaces.

The UV systems are emitting cold UV light to ensure that heat-sensitive packaging materials such as sealing foils are not damaged during disinfection. Besides a wide variety of packaging materials, conveyor belts are treated the same way. These conveyor belts are used for the transport of various foods, including meat products.

The UVC sterilization process destroys the DNA of the microorganism. Consequently, germs have no chance to multiply any further. Their structure is destroyed and living cells are inactivated. Furthermore, they are unable to build up resistances to UV radiation. Would you like to know more about UV disinfection ? Follow the links to our website or contact us here .

YOTL Juli UV Cruise Ship

It’s the warmest time of the year, most people take a little break from work to recharge their batteries: The summer holidays are coming! Whether it's a trip to the sea with fantastic beaches, a relaxing holiday in the middle of nature or a cruise with wonderful views of different coasts. Of course, a cozy evening in a nice restaurant on board should not be missing. A well-equipped, clean and safe kitchen on board is necessary to serve a freshly prepared and delicious meal to the tourists.

For this reason, cruise ships are subject to particularly strict safety and fire protection regulations. These are used, for example, in the ship's restaurant, because cooking produces vapors that contain highly flammable fats. These are increasingly deposited in the kitchen hoods and there is a high risk of fire.

To avoid this, UV light is used in the kitchens of cruise ships. because UV systems in the kitchen hoods destroy and neutralize the molecules of grease and odors. As a result, the risk of fire will be reduced. A nice side effect - the hood body must be cleaned much less frequently. This considerably reduces the cleaning costs.

UV light also can neutralize odors that arise during cooking. Cruise tourists do not have to worry about being disturbed on deck by fumes from the restaurants. Nothing stands in the way of a relaxing experience on board!

Would you like to learn more about the reduction of odors and fats in kitchen exhaust air? Click here for more information.

UV light is used in many other places of large ships. For example, UV light is also used in the ballast water of large ships. Special UV lamps disinfect the water in the ballast water tank and they make the bacteria and pathogens inactive.

Are you interested in our special topic: How can UV light treat and disinfect water?

Click here to learn more about UV ballast water treatment.

Have you ever wondered how the beautiful wood decoration and furniture on cruise ships remain so glossy and scratch-resistant?

UV light cures the varnishes, that are on the wood and achieves these properties on the furniture. But UV light also provides a great surface for matt coatings.

Click here to learn more about drying and curing varnish on wood with UV.

Did you also know that our light sources can be used for emission monitoring of ship exhaust gases?

You can determine different gases, among others nitrogen oxides or Sulphur but also dust and soot particles with a special spectroscopy method. Special light sources such as FiberLight D2 , a compact UV Vis light source or NOx UV light sources are used.

Did you know, what Carbon Infrared Emitters have to do with your T-Shirts?

Especially in the hot summer months, t-shirts are a must have! But the imprint is what makes them a genuine eye-catcher. Infrared emitters help to dry these imprints fast and energy efficient.

Lots of motives are applied as screen print inks on textile and need to be dried afterwards.

Calmatech BV is a globally-acknowledged manufacturer of flash cure dryers and tunnel dryers for the textiles industry, with over 20 years experience of drying and heating technology. The company strives to incorporate the latest technologies in infrared and electronics to improve the efficiency and effectiveness of its dryers. A recent development saw it replace halogen infrared lamps with medium wave carbon infrared emitters from Heraeus.

The medium wavelength is optimally suited for surface drying, as this wavelength closely matches the absorption characteristics of water. By contrast, the short wavelength of halogen lamps is more penetrative so that energy is lost as it penetrates the ink and the textile itself.

The new emitters are fitted precisely in the dryers to create an even heat distribution over the target textile surface. Calmatech BV was able du reduce the drying time from seven to eight seconds, down to two to three seconds, by using Heraeus carbon infrared emitters.

This is a great benefit for the customers, since they do not only get reduced drying time but also reduced energy costs. This is due to the fact that carbon infrared emitters have a very short response time. Different to halogen emitters which need to be switched on permanently, they are suitable for pulse operation, by being switched on only when required.

Extensive research has shown that a Carbon infrared emitter requires up to 30% less energy than a conventional short wave emitter to carry out the same drying process.

Click here to learn more about infrared emitters for drying printing inks or contact us if you would like to receive more information.


Who is always there for you? Who does help with problems of any kind? Your mum! Because she is the best advisor in the entire world. Therefore, there is a day in the year when we would like to give something back to her: Mother's Day.

On this special day we would like to make her feel special, buy her flowers or invite her and the whole family into a nice restaurant. There, it can get unpleasant when guests and the whole neighbourhood smell like bad kitchen fumes.

Especially when cooking with a lot of fat and oil, unpleasant smells and grease deposits can appear in kitchen hoods. Only some of these deposits can be caught by the conventional grease filters in the kitchen hood. The rest accumulates in the hood and there is a high fire risk as well as severe odor nuisances. Here UV light can create remedy. Because treatment with high-energy UV radiation photolyzes, destroys and neutralizes the molecules of grease and odors. The surface of the kitchen hood is thus kept clean and unpleasant odours are a thing of the past. So Mother's Day can be enjoyed again in the restaurant. You can find out more about grease and odor control for food service on our UV application pages.

UV radiation also protects against fires in industrial kitchens

Especially in industrial kitchens, where fats are deposited in hoods and exhaust air ducts, a fire can quickly develop. One ignition spark can be enough to ignite the old fat and cause a fire. Are you interested in our special topic: How does UV light minimizes the fire risk in industrial kitchens?

UV light helps to give the quark for your cake a long shelf life

At Easter you can bake a lot of delicious things. Quark is used as an ingredient in many recipes. In order to keep the quark as long as possible in the fridge, curd cups or lid foils are irradiated with UV light before the filling process.

Only a few seconds of intense light are sufficient to render spoilage germs such as bacteria, yeast or fungi on sealing films and yoghurt pots harmless.

To effectively destroy also the UVC radiation-resistant mildew, the combination of UVC radiation after exposure to low-percentage hydrogen peroxide (1-3%) is recommended. You can find out more about this effective combined disinfection method on our UV application pages .

Perhaps you would like to try out the editorial staff's favorite recipe at Easter? We attached it for you - enjoy it!

Click here to download the carrot-banana-quark cake recipe.

UV curing of rim coatings for steel and aluminium beverage cans

St. Patrick’s Day is an Irish holiday that falls on March 17th. This traditional Irish holiday celebrates Saint Patrick. He is credited with bringing Christianity to the country. Still today there are St. Patrick’s Day parades in many parts all over the world.

Now, what has UV light to do with that?

Food and drink remain an important part of the holiday. One Irish custom is known as “drowning the shamrock.” This is when a shamrock is placed in a cup that is then filled with Irish whiskey, cider, or beer. It’s then drank as part of a toast, with the shamrock either being consumed or tossed over the shoulder for good luck.

Many of the drinks are served in cans. Heraeus Noblelight was instrumental in pioneering the use of UV rim coating for steel and aluminum beverage cans in the early 1990's. UV processors are engineered to install under a coater vacuum conveyor to cure rim coating on aluminum beverage containers. A coat of varnish or lacquer makes cans move through processing smoothly without tipping and spilling during filling operations. This increases production time and quality of the filling process.

Benefits of UV Bottom Rim Coating at a glance:

  • For Steel: to protect the Can from corrosion after it leaves the Canmaker until it reaches the consumer.
  • For Aluminium: to improve Can mobility and production efficiency through the manufacturing and filling lines.

Click here to learn more about UV curing systems for bottom rim coating of beverage cans or contact us if you would like more information.

IR Heat for easy manufacturing

A temperature difference of a few degrees does not sound like much - but it can nevertheless lead to a huge reduction of workload in automotive manufacturing (RSI = repetitive strain injury).

Minimal heating of plastic parts greatly reduces the effort required for some installation work. This reduces the burden on the worker enormously. Infrared emitters from Heraeus Noblelight help with the process.

Rubber fuel pipes are being installed at Jaguar Land Rover in England directly on the production line in the Jaguar XJ. However, because of the hardness of the rubber and the tight fit, operatives were having trouble in securing the pipes. By heating the material, the plastic softens and facilitates the assembly work.

To help facilitate the manual fitting, an infrared system consisting of a floor-standing aluminum framework and a controllable heating zone with two heating modules, was installed on the Jaguar production line at the hose-fitting location.

The heater zone is provided with a sliding drawer and, in operation, a hose to be heated is placed on the table in the drawer between two locating pins. When the drawer is shut manually, the heating cycle commences and the penetrative short wave infra-red radiation heats and softens 80-100mm of the hose length. A subsequent holding period helps to maintain the heat on the hose and ensure that the rubber is soft enough for fitting.

Click here to learn more about IR heat for the automotive industry or contact us if you would like more information.

Composite Materials for skis and snowboards

Not only should skis and snowboards look appealing, they also need to be built to withstand the rigors of snow and ice. Almost all popular skis and snowboards contain composite materials, which are manufactured by Isosport in Austria.

For the modern, high-quality composite fabrics rovings and fabrics made of glass and carbon fiber are impregnated with high-quality epoxy resins. Afterwards it is cured in a continuous process with infrared emitters from Heraeus.

So far, metal-tube emitters were used for this process, but in 2018 they were replaced by medium wave infrared emitters from Heraeus. The more modern emitters have a gold reflector, which directs the heat directly to the product, which significantly increases the efficiency.

Christian Puschitz from the purchasing department at Isosport Verbundbauteile GmbH is enthusiastic: "The new emitters have improved energy efficiency by up to 30%."

Click here to learn more about IR heat for composites or contact us for further information.

Infrared heat for metal cans

Christmas Eve and Christmas Day are all about peace, quiet and relaxation with the family - a sumptuous Christmas breakfast with pancakes and plenty of maple syrup is just the thing to start the day on Christmas Day. Learn more about how infrared radiation contributes to that.

To prevent the maple syrup from being contaminated before it is sold, the coating on the metal cans in which the syrup is filled into, needs to be cured with infrared heat.

In the beginning of the production process the cans are cut and formed from sheet material. After that, the cans are longitudinally welded. It is then important that this weld is internally coated with a lacquer, to prevent contamination of any food products and to protect the weld from attack from aggressive contents. The lacquer is applied by spray and cured with a carbon infrared system from Heraeus Noblelight. The infrared heat is applied from the outside of the container and the heat is conducted through the weld to cure the lacquer on the can inside.

Click here to find out more about curing applications with infrared heat or contact us for more information on this topic!


Especially in autumn, when the cold wave hits, many people resort to medicine to speed up the recovery process. The control of pharmaceuticals is one of the most important tests in the manufacturing process.

For example, the medication is tested for its purity, quality and content. Different analysis methods can be used here, such as UV-Vis spectroscopy for purity testing or high-performance liquid chromatography (HPLC) for determining the content of the active ingredients.

Heraeus special light sources are used in both analysis methods. High-quality light sources such as deuterium lamps provide the user with reliable and very precise measurement results and thus ensure the quality of the products.

Would you like to know more about the different analysis methods or other applications of deuterium lamps in HPLC analyzes ? Follow the links to our website or contact us here.

UV and IR light sources for flooring applications

Every day we walk and stand on different floorings, whether at home, in the office, at the doctor or in the supermarket. Floors can be made of different materials, should defy the daily traces of usage and look beautiful for as long as possible. But how are UV light and infrared heat related to all of this?

Special coatings, which are applied, for example, for the refinement or decoration of floor surfaces, are cured with UV light. Thus, the surface of the floor is "sealed", made scratch-resistant and keeps its nice look for a longer period of time. Different UV technologies can be used here. For example, UV- LED light sources can be turned on and off according to demand, they do not require warm-up time and production speeds can be increased.

A special lens technology reduces the stray light of the UV lamps and allows radiation with "cold" UV light even from a distance. UV LEDs are virtually universally applicable for different materials. This allows a more flexible production process, reduces costs and saves energy.

Learn more about curing with UV LEDs on our special pages .

Infrared heat helps to make floors slip-proof

Embossed knobs or textures make floors more slip-resistant, an important feature in hospitals or office buildings. In the production of PVC laminate, the embossing plant is an elementary part of the production process. Short-wave infrared emitters within the plant heat the laminate to the required softness. Precise heat control allows fast and targeted heating. This saves energy and increases production speed.

Find out more about this and other infrared applications about the manufacture of flooring in our case stories. Order them here!

Special:How to make the best UV LED curing system decision: We have summarized the major points which should be considered.

Infrared heat protects welding equipment against corrosion

Mobile welding equipment is not always used in dry settings. It is used in many different environments, so their housings are vulnerable to wind and weather. Consequently, their casings need to be protected against corrosion by a base coating and then finished with a decorative top coating. However, the complete curing of both coatings involves considerable cost – and until now considerable time. A gas catalytic oven from Heraeus is now significantly helping to allow the anti-corrosion coating on the mild steel casings of the welders to be dried in half the previous time. This also saves operating costs.

This innovative solution has been developed by Miller Electric Mfg LLC, a leading manufacturer of arc welding equipment, with the coating supplier TCI Powder Coatings and Heraeus. The heart of the new system is a gas catalytic infrared oven, which removes the requirement for a full cure of the Zinc primer. The final top coat can be applied whilst the primer has reached the gel stage in the Gas Catalytic IR oven. The final top coat can then be applied, before coated parts pass through a convection oven for final cure. This process actually improves the bond between the primer and the top coat, yet shortens the total cure time.

Click here to find out more about drying processes with gas catalytic infrared heat technology .

UV water treatment for zoo animals

A trip to the zoo is a popular activity for young and old. You are close to the animals that you otherwise only know from books or the media, and get to watch them undisturbed. More than 1.3 million people visit the zoo in Copenhagen every year. It is home to more than 3.300 animals of about 250 different species, many of which live in the water or at least consider it to be an elementary component of their natural habitat, e.g. elephants, crocodiles or hippos. In order for these animals to feel well and comfortable, the water quality is of utmost importance.

Achieving this high level of water quality is a task for UV water treatment.

With the help of high-energy UV rays in the wave range of 200 - 280 nm (UV-C), bacteria, fungi or viruses in the water can be effectively inactivated.

Water disinfection with UV radiation also has a number of advantages: For example, the microorganisms cannot form any resistances. There are no disinfection by-products and the process is completely free of chemicals. As a result, neither smell nor taste of the water are affected.

However, reducing the risk of illness for the zoo animals is not the only reason for UV water treatment: The feel-good factor of the animals also influences points such as stress, feeding behavior, growth, life expectancy and birth rate.

Moreover, with only 0,01 €/m³, UV light is the most cost-efficient and non-chemical solution for water disinfection.

Are you interested in further information regarding UV water treatment?

infrared heat helps you to enjoy jam
infrared heat helps you to enjoy jam.

The thermometer in the garden rises to hotter temperatures with every passing day; families spend the warm summer evenings outside on the terrace and the strawberries and raspberry bushes in the garden bear their first fruits. The perfect time to try homemade jam.

Although it does not pose a problem for in-house production, industrial jam production is faced with a challenge: Due to the high temperature of the jam when filling the glasses, there is a risk that the glasses will break. A custom-made Carbon infrared oven from Heraeus Noblelight knows how to prevent this from happening.

A purpose-built carbon infrared oven from Heraeus Noblelight has been instrumental in allowing a jam-maker in England to change from a hot water rinse system to a cold air rinse system.

The jam jars are filled in a continuous process with hot jam on a bottling line. Before filling, jars need to be rinsed and this was previously carried out by a hot water rinsing process. Heat was necessary to prevent thermal shock and possible breakage of the glass, as jars are stored at temperatures as low as -5°C and jam is at temperatures up to 97°C during filling. The glass manufacturers thus recommend a maximum temperature difference of 84°C. With the hot water rinse, the jars were pre-heated by the hot water. However, the hot water rinsing plant, which had been in use for many years, was becoming increasingly inefficient, resulting in high water usages and costs.

For this reason, it was decided to replace the aging water-rinsing plant with a modern air-rinsing plant, bearing in mind that this would require a separate jar-heating system. After rejecting steam heating for this task, as it would have involved further water consumption, it was decided to investigate the potential of infrared heating. Heraeus Noblelight carried out tests at their Neston Applications Centre, which proved so successful that a carbon medium wave oven was eventually installed.

Learn more about the possibilities of infrared heat for the food industry .

Click here to find out more about Carbon infrared emitters (CIR®) .

Did you know that you profit from specialty light sources during your summer vacation? - International Day of Light

International Day of Light

Are you about to leave for your summer vacation? On the way to your vacation domicile and after you've arrived there you will profit from special light sources.

Infrared radiation and flash lamps help to manufacture plane parts in a better quality, UV light keeps the drinking water clean, and analytical lamps are used at the security check and for air disinfection. Even the snacks on the plane or the shirts you wear on your holiday have come into contact with specialty light sources.

Click here to find out more about the International Day of Light!

Did you know that UV light can help to keep eggshells germ-free?

UV light for the disinfection of eggshells

Naturally, salmonellae are appearing on eggs, mostly on the shell than inside the egg. These bacteria are natural residents of the intestines of poultry which are excreted with the faeces. In this way eggs can be contaminated very easily. Once the egg is broken these bad germs get into the inside of the egg and could cause serious health issues for human beings

The egg itself has several natural mechanisms to protect itself from bacterial colonization and multiplication. Nevertheless while processing eggs from chicken to packaging it is very important to fulfill hygiene regulations.

UV light for the disinfection of eggshells
Photo: UVC-Disinfection is a dry and chemicalfree procedure that can reduce the germ load by 99.9 % on the surface within seconds.

Special intensive UV light can be used to disinfect the surface of the egg, to reduce the germ load by 99.9% just within a few seconds.

The UV disinfection method is effective at wavelengths from 200 nm to 300 nm. The UVC radiation emitted has a strong bactericidal effect. It is absorbed by the DNA, destroys its structure and inactivates living cells. If the irradiance is high enough, UV disinfection is a reliable and environmentally-friendly method because chemicals need not be added. Moreover, the microorganisms cannot become resistant to UV radiation.

Find out more about UV disinfection processes on our special landing pages or contact our UV experts for further information!

Did you know that specialty light sources are being used for water analysis?

World Water Day 2018

World Water Day, on 22 March every year, is about focusing attention on the importance of water. The theme for World Water Day 2018 is 'Nature for Water' - exploring nature-based solutions to the water challenges we face in the 21st century.

Damaged ecosystems affect the quantity and quality of water available for human consumption. Today, 2.1 billion people live without safe drinking water at home; affecting their health, education and livelihoods. Sustainable Development Goal 6 commits the world to ensuring that everyone has access to safe water by 2030, and includes targets on protecting the natural environment and reducing pollution. (Source:

UV light for the disinfection of drinking water

Heraeus offers intelligent product UV solutions to treat water environmentally friendly, reliable and energy efficient. Intensive UV lamps destroy microorganisms in this process, such as bacteria, viruses and parasites, and help decompose chemicals harmful to health.

Click here to find out more about the disinfection of drinking water here!

Specialty light solutions for environmental monitoring

FiberLight® UV-Vis Light Source for high measurement consistency

FiberLight® can be used for highly sensitive analysis, to identify and accurately determine environmentally hazardous substances, such as pesticides and other organic compounds. It is a very compact light source for UV light and the visible spectral region (from 200 to 1100 nanometers). The heart of FiberLight® is an electrodeless deuterium lamp, which is stimulated by high frequency. The construction of this miniature lamp enables mobile UV spectroscopy with portable, battery-operated devices.

See our special page for more information about FiberLight® .

See more details in our Case Story: Biochemical analyses at a depth of 1000 metres: This is how the Monterey Bay Aquarium Research Institute (MBARI) in Monterey, California, uses FiberLight®

Do you know what UV light has to do with your perfume for Valentine’s Day?

Exhaust Air Treatment with UV

Valentine's Day is the day of love. Many lovestruck couples want to make this day extra special by giving a present to their partner. In addition to flowers and chocolates, perfume is a very popular gift.

There are perfumes in various concentrations and with the most unusual scents. However, if all these different and highly concentrated odors are mixed together during production, the smell is no longer lovely.

The odorous exhaust air from production is directed outside into the immediate surroundings of the perfume factories. It is not uncommon that neighbors feel massively disturbed and complain to the responsible authorities and offices. Exhaust air requirements for the factories are the result.

These requirements can be met with the use of UV light. In combination with natural oxygen (O2), UV light generates highly reactive radicals and ozone. These bind with organic substances that are in the perfume exhaust air, thus making the odors in the air harmless.

Click here to read more about industrial exhaust air treatment with UV light.

Would you like to read detailed application examples on air treatment with UV?
Feel free to contact us here and we will be happy to send you further material.

Do you know what IR emitters have to do with your heater?

Anti-icing with infrared heat

Gas turbines need air for combustion, which must be free of dust and other particles. Therefore it always need to be pre-filtered.

Moist cold intake air in the winter months can easily lead to icing of the filter. The filters then allow only minimal airflow and the gas turbine must be throttled or shut down completely - just when it is needed the most.

Infrared systems from Heraeus Noblelight successfully prevent the filters from icing up in gas power plants and gas compression stations during the cold season.

For further information about infrared heat applications, please click here .

Would you like to read detailled application examples about anti-icing with infrared systems?
Please contact us here and we will happily send you further material.

Did you know that infrared helps in the production of chocolate Santas?

Infrared heat for chocolate Santas

Christmas season is upon us, and along with that, the aisles in the supermarkets are filled with all sorts of chocolately temptations: in the form of molded Santas, filled chocolates, or dipped nut confections.

The shaping and filling processes require heat of one kind or another at various steps. Chocolate is poured into preheated molds, one cavity for each half shell. The shells are heated before the filling is inserted - and again to seal them shut.

The quality of the product depends on heating it to a precise temperature of about 30°C, depending on the type of chocolate. The temperature cannot vary more than 1°C above or below the specific temperature required. Otherwise, the chocolate loses its consistency, becomes brittle, or develops an unattractive bloom.

Many renowned chocolate manufacturers rely on Carbon Infrared emitters (CIR®) from Heraeus Noblelight to ensure that the optimal temperature is precisely maintained within ±1°C. At the touch of a button, Carbon Infrared emitters quickly heat to exactly the right temperature. Because they respond within seconds, they can be very easily monitored and controlled.

For further information aboutinfrared heat for the food industry, please click here .

Did you know what a Christmas village has to do with UV radiation?

UV radiation combats mold spores and unpleasant odors

A Christmas theme park in Scandinavia opens its doors to many visitors every year during Christmas season. Featured attractions include an ice gallery, where you can admire various animals carved out of ice. During the rest of the year, the premises are closed.

Due to the damp and wet rooms, mold spores and unpleasant odors are very often formed. Special UV lamps from Heraeus Noblelight can help to combat this problem.

The physical method of UV radiation is an economical and environmentally friendly alternative to chemical processes. By using special Heraeus UV lamps, ozone is generated from the atmospheric oxygen of the ambient air. For this purpose, the emitted radiation of wavelength 185 nm is used. The radiation at the longer wavelength of 254nm photolyzes the ozone into excited oxygen, which oxidizes the long chain molecules. That way, mold can be killed and unpleasant mold odors are broken down.

The ultraviolet radiation covers the wavelength range from 100 to 380 nm. The disinfection with UV low- pressure lamps uses the wavelength in the UVC range of 254 nm, the ozone production the wavelength 185 nm.

Click here to find out more about the UV oxidation process.

Did you know how many parts of your car require infrared heat?

Infrared heat for the automotive industry

Drivers need a quiet cabin, a well-functioning heater for the winter or air-conditioning during the hot summer months, and - in case of an emergency - the airbag should open quickly. For that reason, dashboards are molded from plastic sheets, are provided with insulation and are connected to ventilation ducts and airbag shot channels.

Infrared emitters can solve all the heat processes needed for those operations, as they can be precisely matched to the different materials and shapes.

It is a well-known fact that infrared emitters can cure coatings efficiently. However, did you know that the right choice of emitters make a considerable difference in the process? When infrared radiation is matched perfectly to fit the coating, the curing process can be performed in a more energy-efficient way. This saves time, space and money.

Many other processes in automotive manufacturing benefit from infrared heat technology as well. Infrared radiation transfers energy without contact and generates heat exactly where it is needed in time with the process and without heating up the surroundings unnecessarily.

Take a look at Heraeus' wide range of application areas!
Are you interested in more information? Just click on the corresponding image!

Would you like to find out more about other possible applications? Feel free to send us an email !

Do you know how your wine bottle is related to UV light?

UV light for treatment of wine bottles

Grape harvest is at its peak now. Ripe grapes are collected and will be processed to tasteful wine. Before the liquid will be filled, the bottles need to be very clean and free of germs. Bottles and cups can be treated and disinfected with special UV radiation.

The UVC radiation, effective at wavelengths from 200 nm to 300 nm, has a strong bactericidal effect. It is absorbed by the DNA of microorganisms such as viruses, bacteria, yeasts or fungi, destroys its structure and inactivates living cells. Bacteria are rendered harmless within seconds by UV light. If the irradiance is high enough, UV disinfection is a reliable and environmentally-friendly method because chemicals need not be added. Moreover, the microorganisms cannot become resistant to UV radiation.

After the wine has been filled into bottles, individual labels make them look pretty and unique.

Label Printing and individualization is a big potential for digital printing applications

Printing ink needs to be completely dried or cured before the products can be labeled onto the bottles but also stacked, cut, folded or otherwise processed.

Depending on the paint or ink, UV lamps or IR emitters, or a combination of both, are used for reliable drying or curing. The UV and IR solutions are precisely adjusted to the individual printing process requirements, to work as efficiently as possible.

Would you like to learn more about special UV and IR printing solutions , look on our website.

Interested in more information about UVC disinfection of packaging materials? Please have a look at our special pages .

Did you know that specialty light sources help to analyze undesirable pollutant emissions?

Air pollution monitoring

Smog hanging over cities is the most familiar and obvious form of air pollution. But there are different kinds of pollution—some visible, some invisible. Generally any substance that people introduce into the atmosphere that has damaging effects on living things and the environment is considered air pollution. Air pollution through the ozone, nitrogen dioxide, volatile organic compounds (VOCs) and particulate dust puts a burden on the environment and impairs human health.

Especially now, during the lazy and hazy days of the summer months air pollution is being worse than in the winter time. Days are longer, there is more sunlight and generally more stability in the atmosphere which leads into stagnant air. The air doesn’t move, it just “sits and cooks”.

Emissions that cause air pollution come from different sources, like power plants, cars, planes, ships etc. To limit emissions, they need to be measured. Heraeus Noblelight develops analytical lamps that enable cost-efficient and reproducible precise analysis.

Photoionisation detection lamps (PID) for example are most commonly used in VOC gas detection, in gas chromatography (GC) and sample ionization for mass spectrometry. Whilst high-intensity Deuterium lamps are the ideal choice for high-end HPLC instruments or UV-Vis spectrophotometer. Learn more about Xenon Flash lamp modules for photometric instrumentation applications or the new NOx module solution for emission monitoring.

Did you know that infrared heat and UV light contribute to the success of your barbecue?

IR and UV systems for a successful barbecue

Most people like to spend their spare time during the hot summer months outside. In order to bring the day to a close after spending the day at the swimming pool or as a welcome change after an exhausting day at the office, families and friends like to gather in the evening for a barbecue in the garden. However, all the grilled meat, be it sausages or steaks, tastes only half as good when the barbecue sauces or the ketchup are missing. A wide range of sauces is therefore an integral part of a successful barbecue.

Infrared and UV light have a significant part in the process of filling the barbecue sauce safely and without germs into the bottles.

Infrared heat protects glass bottles from breaking

If the temperature difference between liquid and glass is greater than 42°C when filling the bottles, there is a risk of heat shock which causes the glass to crack. To keep this temperature difference below the critical level, the empty bottles were rinsed with hot water, then preheated and dried in a steam oven before filling. This process was very energy-intensive due to the water and the steam, and the steam oven could not be switched off quickly enough during a belt stop. The infrared oven, which is now used to heat the bottles, is more energy-efficient. By means of a PID controller within the infrared oven, it is ensured that the bottles have the correct temperature for filling. Carbon infrared emitters (CIR®) emit radiation in the medium wavelength and are suitable for this process, since glass absorbs particularly well in this area. In addition, they react so quickly that they can be controlled easily and an overheating of the bottles in the event of a belt stop is avoided.

Ketchup maker goes for clean production air using efficient UV light

The recipes for barbecue sauces or ketchup usually include sugar, tomato paste, vinegar and salt, as well as condiments. This makes the product tasty. However, not only humans but also moulds, yeasts and viruses find that mixture lovely. They present a problem in the production process as they are naturally present in the air, settle down on the intermediate product before it is packaged and make it perish.

In cooperation with Heraeus experts, Wiso Feinkost GmbH, a producer of more than 350 tons a month of condiment sauces for 38 well-known labels, has found a fast and cost-efficient solution to this problem. The room air is filtered and disinfected with UV light, so that the product will be non-perishable even without adding preservatives.

"In the end, you want a solution that reliably and lastingly disinfects the air", says managing director Lars Wiegand. A cost-efficient and pragmatic solution was found in an advisory meeting wit hthe Heraeus UV experts. The precisely calculated number of ozone-free UV lamps was installed in a commercially available, washable HEPA filter. The efficient method is quite simple: The viruses and mould spores have different sizes and properties. While mould spores are relatively large and can be caught by the filter, viruses are too small to be retained. Therefore, they get inside the filter where they are inactivated by the UV light. The mould spores already caught can be exposed to the radiation for a longer time. That way, they are inactivated with little expenditure of energy.

Find out more about infrared heating processes in the glass industry and UV air disinfection on our special pages.

Did you know that fitness equipment benefits from gas catalytic infrared?

Gas catalytic infrared for fitness equipment

Every year just before the summer, fitness studios experience a boom because everyone wants to look their best at the swimming pool or lake.

To ensure that the exercise equipment with its smooth and glossy surface can look its best as well, gas catalytic ovens from Heraeus Noblelight are used to dry and cure the powder coated parts.

Fitness equipment by Life Fitness of Chicago, Illinois, is coated with powder lacquer, which is cured by heating. The predicted growth in the product line and coating schemes required a significant expansion of Life Fitness’ powder coating operation with only a limited increase in plant size. Until now the curing process was achieved exclusively with a convection oven. Some parts require two top coats and these are rehung after the first coat to facilitate the second coat and cure. In order to integrate single and double coated parts into the continuous flow line, whilst preventing powder contamination, pre-planned gaps are required to re-hang parts requiring a second coat. This process had always been an ergonomic issue as no mechanical lifts are available due to lack of space. The line was operating at 2.4 m/min, but effectively with the double application, the part yield for two coat parts was only 50%. One option was to add another convection oven to cure the first coat before applying the second coat. Since floor space was at a premium this was not going to be a feasible or a cost-effective alternative.

The smartest solution was to add two Gas Catalytic IR Pre Gel Ovens from Heraeus Noblelight. After successful tests were carried out at the test center in Buford, USA, a two-line system was launched. Today, two lines run parallel, one for parts with one coating and one for parts with two coatings. Each line has a gas catalytic infrared oven and a corresponding paint booth. For the final curing, the lines run through the existing convection oven. This system achieved the desired 2.4m/min. line speed along with the option of going to 3m/min. More importantly, even though the line speed has not changed, the output of the powder coating plant has doubled. The introduction of Gas Catalytic IR technology from Heraeus has ensured additional savings on natural gas and electrical costs. The adoption of the latest technology has also attracted local utility grants which has helped to reduce the overall capital spend.

Please refer to our special pages for further information on gas catalytic infrared systems.

Did you know that packaging is becoming intelligent through flash systems?

Intelligent packaging with flash systems

Intelligent packaging can do more than just wrap a product. They help in the identification and logistics of the products, they protect against theft or product piracy. The core of the intelligent system are small chips, RFID labels or generally printed electronics. For this purpose, a metallic ink is printed and then made conductive by sintering. Sintering of low-cost copper inks works particularly well with flash lamps, since they sinter more rapidly than the copper could oxidize.

Heraeus Flash systems make it possible to sinter copper ink for smart packaging in milliseconds without damaging the paper

Copper inks are a cost-effective alternative to silver inks when it comes to printed electronics for RFID or smart packaging. However, the sintering of copper ink on paper poses a genuine challenge. A co-operation between three companies: Promethean Particles, Dycotec Materials and Heraeus Noblelight, showed how copper nanoparticles in printed ink are easily and quickly fused by xenon flash lamps and thus form highly conductive and stable electronic circuits.

Unlike silver, copper rapidly forms oxides in the air, which makes sintering more difficult or even impossible. So far, copper ink is often sintered in an oven under inert gas, which requires specialized environment not suited for every process line and is relatively slow. Xenon flash systems on the other hand, transfer a great deal of energy into the ink within milliseconds. This causes the ink to sinter so rapidly that no oxidation process takes place. In addition, the substrate, e.g. foil or paper, is hardly heated with this rapid energy transfer and is thus not damaged.

Co-operations for the sintering of metallic inks

  • Promethean Particles from Nottingham, UK: manufacture of nanomaterials
  • Dycotec Materials from Swindon: producer of inks and coatings
  • Heraeus Noblelight from Cambridge, UK: development of a Xenon flash lamp system for the sintering of metallic inks in Cambridge.

“From discussions with our customer base, there is a clear need for digital additive processing with low cost ink systems. Our new high volume manufacturing facility has enabled us to demonstrate our capability to produce high quality nanoparticles at quantities in excess of 1,000 tonnes per annum”, commented Laurie Geldenhuys, CEO of Promethean Particles. Dr. Richard Dixon, Managing Director of Dycotec Materials added, “using the Promethean Particles’ nanomaterials we were able to produce high solids loading inks with demonstrable stability that can be processed using inkjet heads operating at high frequencies, ensuring compatibility with high volume production. Processing our inks with the Heraeus flashlamp system enabled excellent electrical conductivity to be achieved of ~3 mΩ/□/mil.”

Martin Brown, Applications Manager of Heraeus Noblelight commented that “photonic sintering of inks offers significant benefit over conventional oven processing that requires substantially larger footprints, higher operating costs and longer processing times. For copper inks, our Heraeus Xenon Flash technology is particularly well suited as the fast processing speeds overcome the copper oxidation issues.

Click here to find out more about the sintering of metallic inks.

Did you know that the wrapping of Easter eggs benefits from specialty light sources?

UV specialty light sources for packaging surfaces

The use of high-energy UV light reduces the germ load on packaging surfaces by up to 99.9%. This clearly prolongs the shelf life of foods such as yoghurt, curd or milk.

Also your nicely wrapped Easter eggs benefit from it cause not only packaging materials like cups, caps, cans, bags, glasses or bottlenecks can efficiently be disinfected with UV light but also foils and sealing foils.

Just a few seconds of the intensive, yet cold, light is enough to dispose of microorganisms such as bacteria, yeast and fungi. Compared to chemical and thermal methods, UV light radiation treatment is a very reliable, economic and, above all, environmentally friendly method and hence especially suitable for the processing of organic products, chocolate or milk powder.

Please read more about disinfection of packaging materials at our special pages online.

Please contact us here if you would like to receive further press material.

Did you know that infrared heat plays an important role in the production of chocolates?

IR heat for the production of chocolates

Supermarkets on Valentine's Day. Each year, there is a gathering of men who buy chocolates or similar chocolate sweets for their loved ones. After all, chocolates are one of the more popular gifts next to jewelry and flowers that men like to buy for their girlfriends or wives on this special day. However, not many people know how exactly the small chocolates are produced. Carbon infrared emitters from Heraeus Noblelight play a central role in their production.

Heat processes play an important role in the production of pralines. A first important heating step is the heating of the molds before they are filled with chocolate.

The quality of the product depends on heating it to a precise temperature of about 30°C, depending on the type of chocolate. The temperature cannot vary more than 1°C above or below the specific temperature required. Otherwise, the chocolate loses its consistency, becomes brittle, or develops an unattractive bloom. Tests at the Heraeus application center in Neston, UK, showed that carbon infrared emitters , together with pyrometers to ensure that the optimal temperature is precisely maintained within ±1°C, met the requirements for praline production. Pyrometers control the plastic molds just prior to the infrared heating system. This temperature specifies the time span during which the infrared heat acts on the molds. After this warming step, another pyrometer checks whether the correct temperature for filling the chocolate has been reached.

When combining the chocolate halves, a pyrometer measures the chocolate temperature in front of the heating station and controls the infrared emitters so that the halves can be reliably joined together at a temperature of about 30 ° C.

The use of infrared emitters not only significantly improved the quality and appearance of the finished product. In addition, the carbon infrared emitters react so quickly that they can be switched off immediately in the event of an unexpected stop in the production line. This ensures that impairment of plant and products is minimized.

Would you like further information on the possibilities of IR, UV and flash for the production of chocolates?

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Did you know that UV light is also used at cruise ships?

UV ballast water treatment cruiseship

Large vessels like e.g. containter vessel but also cruise ships need water, so called ballast water to gain stability and balance their mass. In every port ballast water, which also contains small organisms such as plankton, aquatic invertebrates, fish larvae but also pathogens is loaded into the vessel, travels around the world until it is unloaded again in another port. In this way, many sea dwellers become stowaways that travel around the world. With intensive UV light these undesired organisms can be killed within the ballast water tanks already on the vessel to minimize their spread.

In future, environmentally compatible treatment systems for ballast water are to become imperative on all maritime vessels, this was defined by the International Maritime Organisation (IMO). One possible method is to treat ballast water with intensive UV light. The special light disinfects the water. In the UVC range, at a wavelength of 254 nanometres, it destroys the DNA of the bacteria and pathogens, makes them inactive and prevents them from reproducing. For this process, Heraeus develops and manufactures special UV lamps and complete modules and power supplies for integration into modern ballast water systems.

Would you like to learn more about water treatment with powerful UV light? Please contact us

Find further details about UV treatment of ballast water in our special online section.

Did you know that UV light helps keep your kitchen clean? Even when roasting a goose?

grease and odour reduction kitchen uv

The Christmas goose is a tradition that many families enjoy at Christmas. However, it is rather elaborate to prepare at home. This is why people like to order it when dining out. Not an easy task for restaurateurs because the fatty poultry releases a lot of grease when it is cooked. Fat separators in the kitchen air extractor hood can only trap up to 95% of the grease in the outgoing air. The rest is deposited in the hood casing and the exhaust air duct. This starts to smell over time and causes a fire hazard. Moreover, the grease in the air settles down which makes cleaning very hard work.

Highly-efficient odour and fume reduction thanks to UV technology

Installing the Heraeus UV Control System in exhaust hoods in commercial kitchens enables environmentally friendly cleaning of exhaust air using UV light.

Treatment with high-energy UV radiation in the wavelength range of 185 nm (VUV) photolyses, destroys and neutralises grease and odour molecules. This keeps the surface of the extractor hood clean and makes it much easier to clean the exhaust air duct. Where daily cleaning by hand was required before, the exhaust air duct now needs almost no manual cleaning at all.

Powerful Heraeus VUV lamps are very efficient even at ambient temperatures of up to 80°C. Moreover, their long useful life of up to 10,000 hours of operation minimises the servicing intervals.

Click here to learn more about air treatment with UV light.

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Did you know that infrared heat helps to keep the Christmas stollen mold-free?

germ reduction with infrared heat

A delicious Christmas stollen for tea simply belongs to Christmas time. The rich pastry should not only taste well but also remain mold-free.

The use of infrared systems from Heraeus Noblelight prior to packaging significantly reduces the formation of mold. For Christmas stollen, 6 seconds at 125°C is enough to achieve a notable effect. Tests with baked bread showed that bread lasted three to four days longer when it was treated with medium-wave infrared emitters for only four seconds.

Infrared emitters reduce germs on bread

One of the major problems in large-scale bakeries is mold contamination of the bread surface between baking and packing. Mold spores are naturally present within a bakery environment and contamination can take place as the bread cools before it is wrapped.

Heraeus Noblelight have carried out successful tests, both in its own application center in Neston and in some bakeries, to demonstrate the effectiveness of infrared radiation as mold-prevention technology. It has been shown that mold contamination is prevented if the bread is heated for a few seconds before final packing. The short heating time does not have any negative effects on the taste or the consistency of the bread. Heraeus now offers the bakeries the opportunity to use their testing facilities to convince themselves of the effectiveness of the technology.

Infrared heat is already widely used within the food sector, providing targeted and controllable heat to ready-made meals or chocolate products . In most cases, carbon infrared emitters are used because they heat the surfaces very quickly and maintain the desired temperature with a maximum deviation of 1°C.

Carbon infrared emitters for germ reduction on baking tools

Infrared heating transmits large amounts of energy in a short time. A disinfection with infrared radiation is a thermal disinfection, with the help of controlled heat. Depending on the power of the emitter, humidity and desired production line speed, sterilization is achieved between 120°C and 160°C within 10 to 30 seconds.

Carbon infrared emitters combine the highly effective medium wave radiation with sufficiently high surface powers. Thus, germs can also be killed on porous surfaces within less than one minute. Due to the depth effect of the carbon emitters the germs which already lie in several layers are also reached.

In the baking industry Carbon infrared systems provide simple, fast and safe disinfection of baking molds, conveyor belts and other baking utensils. By killing bacteria and spores, the fungus and mold formation is minimized. Carbon infrared emitters from Heraeus Noblelight are also particularly easy to handle. They are a reaction time of 1-2 seconds so there is no risk of ovreheating the baked goods in the event of the unexpected stoppage of the conveyor system. They are also particularly compact, which simplifies retrofitting into an existing machine. The radiation field can be easily adapted to the width of the baking trays.

Read more about UV technology for the sterilization of surfaces and packaging material here.

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Click here to order more case stories about the food industry!

Did you know that infrared heating is an essential part of automotive manufacture?

Infrared heat for the automotive industry

Except for the coating, which dries more quickly using infrared heat, automotive manufacture uses infrared heating more or less invisibly. In the manufacture of airbags, for example, and in over 200 other fields of application.

Infrared makes production processes more efficient

The success of infrared technology in the automotive industry has various reasons: For starters, infrared technology is very versatile, as it can create the perfect heating process for almost any material. Another factor is its economic efficiency: Infrared systems provide targeted heat, which means that both process speed and productivity increase.

Infrared heat has a wide range of applications in the automotive industry

During the production of plastic handles, housing parts, covers, suction hoses and lids, it is not always possible to prevent the creation of sharp-edged burrs , especially at the tool splitting surfaces. Infrared radiation heats the surfaces of plastic components in a contact-free manner and in a matter of seconds, so that the burrs are simply melted away.

A production line for fuel tanks has been upgraded using an infrared system. The system was selected to give fast, efficient surface drying of a water-based spray coating, which is applied at an intermediate stage of fuel tank assembly. The infrared emitters helped maximize both throughput capability as well as energy efficiency.

Infrared heat is also used for the production of car windows. It ensures the reliable and precise adhesion of molded thermoplastic sealings. Fast response medium wave emitters activate the adhesive after its application.

Are you interested in the just-mentioned case stories or other stories about infrared heat for the automotive industry? Please contact us!

For more applications of infrared heat and the automotive industry, click here!

Did you know that Heraeus FiberLight UV light source helps to keep beer tasting good?

Beer analysis

Craft breweries like to promote themselves as a better-tasting, better-quality beer than the alternative macrobrews. While taste is a subjective and hotly debated topic, beer quality is something that can easily be measured with spectrometers.

The Beer-Lambert Law, sometimes more aptly called Beer’s Law, relates the amount of light absorbed in a sample with the properties of the sample. To perform an analysis you need a sensor, a spectrometer, and a light source, in this case a Heraeus FiberLight miniature UV light source. Spectroscopic quality control testing provides a straightforward, low-cost method capable of rapid sample analysis. Incorporating a spectrometer in a brewery’s quality control process can save time and money in a variety of ways. It is nondestructive, does not require complicated sample preparation, and it provides real time data.

The Heraeus FiberLight light source is a complete plug-&-play design that is easy to incorporate into spectroscopic systems. This means the OEM spends less time and money on complicated optical designs, and gets the product to market quicker. Its small size is ideal for portable or table-top units and enables design flexibility. Its integrated control board and power supply eliminate the need for auxiliary electronics. Overall, FiberLight lowers development and production costs to OEMs, whilst its fast and long life operation lowers cost-of-ownership to end users. And…we help keep beer tasting good!

Are you interested in reading the whole case story about Spectroscopic quality control in breweries? Please contact us .

Did you know that tempering helps with the production of glass bottles and ampoules for the pharmaceutical industry?

Heraeus glasspolarimeter

Medication, tablets and pills are packaged in small glass bottles or ampoules. These need to be safe and clean but the special shape of the glass packaging makes its manufacture something of a challenge. The glass is formed under heat, which means there are residual thermal stresses and the glass is more likely to crack. For this reason, these thermal stresses must be removed before they are put into use. Stress relief is achieved by tempering. This involves a controlled heating to around 600°C, followed by a slow cool-down. Various technologies can be used for this heating process, a new development is the MAX infrared oven, which offers significant user benefits.

The MAX Infrared Oven – Precisely tailored to meet customer needs
Tempering packaging glass with warm air takes up valuable time and space. The new MAX infrared oven from Heraeus Noblelight is superior to both convection and batch ovens, as it transfers the required energy in a very short time. Both the process chamber and the feeder system of the new MAX oven are made of pure quartz material, which is extremely resistant to thermal shock and on the other hand minimizes the possibility of the glass containing unwanted particle impurities. In cannulas or glass bottles, the base is relatively thick and the walls comparatively thin. Consequently, base and walls are heated at different rates. The QRC material used in the MAX oven is made up of quartz glass so that the infrared radiation is diffused to provide a particularly homogenous heating effect.

Tempering within a few minutes
In order to temper the glass products, they are passed into the MAX oven, heated to 600°C and held for a short time at this temperature. They are then removed from the oven and cooled in a controlled manner. Tests in the Heraeus Applications Centre in Kleinostheim have established that when glass is heated at a rate of 50 °C temperature rise per second then the complete tempering process can be completed in around five minutes. The test oven had a power of 15kW, so that the temperature was held constant at the 600°C necessary for the glass tempering. Compared with conventional electrical heating methods, the MAX oven is five times faster and provides energy savings of up to 90%. Consequently, the tempering process time can be reduced, energy efficiency can be increased and operating costs lowered.

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Did you know that UV light helps to ensure safe bathing during the summer months?

Did you know that UV light helps to ensure safe bathing during the summer months

Communal wastewater, after being cleaned in clarification plants, is reintroduced into the water cycle, into rivers, lakes and coastal waters. Special treatment is necessary if, at subsequent points, drinking water is extracted or wastewater is fed back to bathing waters. If the wastewater has a high germ count then the hygienic conditions for bathing become doubtful as there are significant dangers of infection for humans.

In addition to the conventional processes for cleaning water – such as the use of chemicals like chlorine and ozone or filtration systems – the importance of ultraviolet light as a reliable, environmentally friendly and economically viable alternative is ever increasing.

The city of Munich and the State of Bavaria started a project to improve the hygienic water quality of the Isar, to ensure safe bathing during the summer months. One part of the Isar is diverted into the Isar canal and used for energy generation. As a result, the remaining Isar between Bad Toelz and Freising carries very little water. By introducing cleaned wastewater from the clarification plants in this area the degree of contamination was high, in spite of sufficient treatment, and the water was heavy with pathogens. The Europe-wide, unique “Clean Isar” project included the decision to use UV wastewater disinfection as the final cleaning stage in the clarification plants which fed the wastewater back into the river. The aim was to significantly reduce the germ count of the waste waters and so improve the hygienic water quality of the Isar in the bathing season, while meeting the severe EU bathing water regulations.

Heraeus Noblelight offers different UV solutions for water treatment.

The disinfection of water can involve the use of compact medium pressure UV lamps, low pressure UV lamps and high power amalgam lamps.

Follow the link, if you would like to read details about the different UV lamp technolgies for water treatment .

Are you interested in details about the project: “Clean Isar – a decision for UV”? Please contact us at .

Did you know that infrared emitters help embellish garden shovels?

embellish garden shovels with infrared emitters

Planting roses or digging over the vegetable patch - tools are necessary for any kind of work around the garden or house. Colored shovel blades are not just nice to look at, the applied coating additionally helps protect the blade against rust and corrosion.

The powder coating on the metal blades of the shovel, as well as the coating of machine parts, rims or engine housings, can be cured with infrared heat.

Gardening tools are exposed to plenty of nature's features - they have to withstand dirt and now and then the occasional downpour.
However, rain is not the only hazard: sunlight makes the colors on your gardening tools fade.

This is why it is of upmost importance for you gardening tools, e.g. a shovel, to be produced and coated at high quality. It is necessary that the coating remains on the product for two reasons: A well-coated garden shovel is aesthetically more pleasing than one with its coating chipping off. Furthermore, the coating helps protect the shovel.

A high quality and efficient coating of metals can be achieved with infrared emitters from Heraeus Noblelight.

Infrared heat - basics

Infrared heat transfers energy and generates heat where it is needed. PLC controlled infrared ovens are precisely designed to match the thermal process application. This saves energy, improves process stability and increases capacity and quality. The emitted radiation is in the range of 3,5 to 5,5 µm and thus exactly matches the absorption spectrum of powder coatings and water.

Gas catalytic infrared - efficient and reliable heating processes

Gas catalytic IR heat is idead for several processes, for example the coating of heat-sensitive substrates such as MDF, powder coating of metallic and non-metallic substrates, drying processes and thermoforming of plastics. The coating of the shovel blade is cured with a gas catalytic infrared system, thus making sure that the shovel does not oxidize and that the colors do not fade or chip off.

Gas catalytic infrared emitters convert natural gas or propane into medium to long wave infrared by using a special platinum catalyst. This flameless reaction differentiates the gas catalytic infrared system from other conventional infrared systems where gas is burnt in the process.

The heaters are available in ten standard sizes that can be combined to create large or small oven systems depending on the application. Each system can be split into any number of individual PLC controlled zones for precise process control.

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Did you know that specialty light sources minimize the odor during the sugar beet production?

Minimize odor during the sugar beet production

Sugar plays an integral role in a healthy balanced diet and an active lifestyle. During the manufacturing process sugar beets pass through many stages beginning with sugar syrup which is crystallized to create white sugar. Further processing generates a final product – molasses. This entire process, involves an exhaust air with a characteristic odor that can be detected over a large vicinity.
High-power UV irradiation has a positive effect on organic components and reduces the odor significantly.

Would you like to read more about this topic? Request the whole case story „Smart UV technology reduces odors from molasses production” via mail .

UV lamps from Heraeus Noblelight are an effective and economical solution in comparison to other options for the treatment of exhaust air. Find out on our website how UV oxidation works.

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Did you know that Heraeus PID lamps have been used in the measurement of air quality at the London airport?

Did you know that Heraeus PID lamps have been used in the measurement of air quality at the London airport

Air pollution such as ozone, nitrogen dioxide, volatile organic compounds (VOCs) and fine particulates - mostly from vehicular emissions - puts a strain on the environment and affects people’s health, which could result in reduced life expectancy.
Real-time monitoring of air quality is important to understand the factors that influence air pollution.

In a research project with the University of Cambridge, UK in and around London Heathrow airport a sensor network with 50 stations has been installed measuring the air pollution caused by road and air traffic around Heathrow airport.

For this purpose the small battery-powered instruments are lamppost-mounted, which contain a number of sensors that measure six gases, volatile organic compounds (VOCs) and airborne particulates. Heraeus Noblelight supplied PID lamps, which have been used for the detection in these sensors.

And so does air analysis & pollution control with PID lamps work:

Measurement of Volatile Organic Compounds (VOCs) using portable Photoionisation Detectors (PID) enables fast detection at ppb sensitivity.
Monitoring VOCs using PID is becoming an economical way to track pollution and air quality in urban environments. Heraeus PID lamps are the industry-leaders for lifetime and spectral purity for cost-effective, reproducible analysis.

Photoionisation is the term for the absorption of high energy photons by a molecule which results in ionisation of that molecule. The current created by ionisation is proportional to the concentration of the molecule, so this provides a simple method for quantitative analysis of a variety of compounds.

The technique is non-destructive so can be used in conjunction with other detectors for extending the analysis. Photons will only ionise molecules with an ionisation potential less than the photon energy.

Heraeus produces a wide range of PID lamps for standard and customer-specific requirements both so RF and as DC versions. For portable detectors HF versions are the best choice because they are smaller and require less energy, while DC devices are preferred for laboratory instruments.

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Did you know specialty lamps are used for printing napkins?

Did you know specialty lamps are used for printing napkins

Paper napkins are popular because they are well absorbent and imprinted with decorative pictures. However, especially these features make it difficult to print on them. The ink on the surface is to be dried just like the penetrated ink in the deeper napkin layers.
The napkins can be packaged only after ink and water have completely dried. To have this done in-line and within an acceptable time, drying must be especially efficient.

Depending on ink, UV lamps or IR emitters are used for drying or curing .
Heraeus supplies special hybrid carbon infrared emitters for drying water-soluble ink e.g. on multi-layer, absorbent napkins. The emitters help to dry printing ink on the surface and at the same to evaporate water under the surface.

UV-curing printing inks are special colour systems which are caused to dry, or more precisely, to cure by UV radiation. The material on which the ink is printed, preferably smooth and non-absorbent surfaces, is transported through a UV installation with special UV lamps or UV LEDs and the ink film is cured within seconds. The cured surfaces can then have various properties such as resistance to chemicals, adhesion, resistance to scratching or sheen.

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Did you know infrared keeps ships running during winter?

Anti-icing with infrared

Out of doors, ice, snow and freezing humidity can impair the proper function of technical installations. Here are three examples of infrared ensuring continued operation despite bad weather.

Gas turbines are throttled if filters are iced up.
To function properly, gas turbines need air for combustion. However, that air must be free from dust and other particles and is, therefore, always filtered. Cold and wet intake air in winter months can easily cause icing-up of the filters. The filters then let little air pass through and the gas turbine has to be throttled or switched off – of all times in the season it is needed most. Mostly, the filters used are made of fleece, and often they consist of many small units inside a large filter housing. Gas turbines are supplied with intake air from the outside, and especially at low outside temperatures combined with cold and wet air, the fleece filters can easily ice up. Therefore, the filters need to be protected to preserve the filtering effect and the air flow. A British plant manufacturer has tested different anti-icing systems and decided to use a Heraeus Noblelight infrared system in a gas compressor plant in Germany. The tests showed that an infrared module consumes less energy and is easier to install than other technologies. Three modules were installed, which are controlled by a thermostat that switches the emitters on when the outside temperature drops below a certain value and off again if the temperature reaches a preset value. The infrared modules are compact and very robust, and reliably function even under clammy conditions.

Gates of locks can no longer be used if they are iced up.
Shipping must stop if locks are iced up. At six weirs with locks in the Danube and the river Inn, Heraeus Noblelight infrared emitters make sure the locks can be operated also in severe winters. The infrared emitters are installed horizontally at the weirs' lower sluices. Splash water cannot affect quartz glass infrared emitters, because quartz glass has a very small thermal expansion coefficient, and hence is very well resistant to thermal shocks. The electrical connections are protected against water by a patented housing (made by the Heraeus customer Elektro Neumayer).

Iced coal cannot be moved.
Bulk goods such as ore or coal, which are transported by rail in metal cars, may freeze together into large lumps in cold and wet weather. Doors and flaps cannot be opened and it is difficult to empty the cars completely. Infrared heat can help here. The cars are heated from the outside, so that the coal lumps thaw.

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Did you know that printed electronics need special light sources?

Printed Electronics
Source: fotolia

Printed electronics and printed functionalities are on the rise, in the form of RFID (radio frequency identification), as part of telephone or credit cards (smart cards), as copy protection or as security features in ID cards. To produce printed electronics, organic or metal-containing inks are applied on plastic foils, paper or glass. Drying, curing and sintering are methods required to achieve the desired conductivity or semi-conducting or dielectric properties. UV lamps or LEDs and flash lamps with intelligent control units are used for this.
Depending on the application, the optimal emitter is chosen, so that the wavelengths suit perfectly to the ink and the substrate.



Flash Lamp Systems

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