NANOCOLOR® Nitrate Z
Photometric determination of nitrate
Photometric determination with sulphanilic acid and 1-naphthylamine after reduction to nitrite.
First nitrate ions are reduced to form nitrite ions. In acidic solution these nitrite ions react with sulphanilic acid and 1-naphthylamine to form a red azo dye.
Data and ordering information
Cat. No. 918 63
Type standard test 1-63
Range 10 mm cuvette:
0.1 – 1.1 NO3-N / 0.5 – 5.0 mg/l NO3-
50 mm cuvette:
0.02 – 0.45 NO3-N / 0.1 – 2.0 mg/l NO3-
Sufficient for 440 determinations
Shelf life at least 18 months
Sea water suitability no