Amalgam UV lamps for disinfection and oxidation

Amalgam UVC lamps with Heraeus Longlife Technology offer disinfection performance which is virtually constant over the lamp operating life.

Amalgam UVC lamps provide up to ten times the UV power density of conventional low-pressure mercury lamps and can even be used at high ambient temperatures of up to 90°C.

Moreover, amalgam lamps are not affected by temperature fluctuations.

Amalgam UV lamp

Unique Longlife Technology coating

The unique coating prevents the discoloration and transmission losstypical with conventional UV lamps and keeps UVC output at a continuously high level.

While the UV output of an uncoated UV lamp drops to 50% after 8,000 hours of operation, amalgam lamps with Longlife Technology coating provide up to 90% of the UVC output even after 16,000 hours of operation (see diagram).

The result is a virtually constant disinfection capability over the entire life of the lamp along with significant savings inenergy , maintenance and consummable parts costs.

Your advantages

  • Use at high ambient temperatures of up to 90°C
  • Not affected by temperature fluctuations
  • Energy-saving
  • Low-cost alternative to medium-pressure lamps
  • Highest power density for low-pressure lamps
  • Generate very little heat
  • Potential for reducing number of lamps, system components and servicing intervals

Typical lifetime diagram of UV amalgam lamps

Comparison of technical data of UV amalgam lamps

Ozone-free Ozone-generating
Spectrum: Wavelength 254 nm 185 nm, 254 nm
Arc length 25 – 150 cm 25 – 150 cm
Electrical power 50 – 800 W 50 – 800 W
Typical UV efficiency
at 254 nm
35% 35%
Typical efficiency
at 185 nm,
natural quartz glass
approx. 6%
Typical efficiency
at 185 nm,
synthetic quartz glass
approx. 9%
Specific UVC flux 0.5 –2 W/cm 0.5 –2 W/cm
Service life 15,000 h
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