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  • VISOCOLOR® HE Nitrite, Cat. No. 920 063

VISOCOLOR® HE Nitrite, Cat. No. 920 063

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01 / 12 / 2019
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Detail VISOCOLOR® HE Nitrite, Cat. No. 920 063

VISOCOLOR® HE Nitrite Colorimetric determination of nitrite In acidic solution sulphanilic acid or sulphanilamide are diazotised with nitrite. The diazonium salt is then coupled with an aromatic amine, forming an intensely coloured azo dye. Organic colloids, chlorine, humic acids and coloured heavy metal ions interfere.( Reaction principle analogous to APHA 4500-NO2-B, EPA 35.1, DIN EN 26777-D10) Data and ordering information Cat. No. 920 063 Type high sensitive test kit Range 0.0 • 0.005 • 0.010 • 0.015 • 0.02 • 0.03 • 0.04 • 0.06 • 0.08 • 0.10 mg/ l NO2– Sufficient for 150 determinations Shelf life at least 24 months Sea water suitability yes Detectable with PF-11 no In surface waters nitrite ions are generally present in low concentrations. Their presence in ground water is less common. In waste waters nitrite frequently occurs, even in fairly high concentrations.
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