H - Hydrogen
Deuterium is a natural isotope of hydrogen. Due to its mass it is also known as "heavy hydrogen". Heraeus Noblelight manufactures deuterium lamps that are the ideal light source for high-precision absorption measurements in the laboratory by generating a continous spectrum with wavelengths ranging from UV to visible light. Thus, they help determine traces of undesired contamination such as melamine in milk powder for babies.
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