NANOCOLOR® total Nitrogen TNb 220
Photometric determination of total nitrogen
Oxidative decomposition in the heating block with subsequent interference compensation and photometric determination with 2,6-dimethylphenol in sulphuric acid / phosphoric acid mixture.
All organic and inorganic nitrogen containing substances are oxidised to nitrate in acidic solution. In acidic solution nitrate ions react with 2,6-dimethylphenol to form 4-nitro-2,6-dimethylphenol, which can be evaluated photometrically.
Reaction basis analog to DIN EN ISO 11905-1
Data and ordering information
REF 985 088
Type tube test 0-88
Range 5 – 220 mg/l N
Sufficient for 20 determinations
Shelf life at least 1 year
Sea water suitability no
