MeasuringRange 0.5 to 10 ppm Number of Pump Strokes 1 Correction Factor 1 SamplingTime 1 minutes per pumpstroke DetectingLimit 0.1ppm (n=1) ColorChange Pink → Yellow to Pale orange ReactionPrinciple 2RNH2 + H2SO4 → (RNH3)2SO4 Coefficient ofVariation 10% (for 0.5 to 2ppm), 5% (for 2 to 10 ppm) ShelfLife 2 Years Correctionsfor temperature & humidity Temperature correction is necessary Store the tubes at cool and darkplace.
Possible coexisting substances and theirinterferences (NOTE)
Substance Concentration Interference Change color by itself Ammonia - Plus error Discolor to yellow Aniline, Hydrazine,Pyridine - Plus error Yellow to brown discoloration Amines,Amidos - Plus error Yellow to browndiscoloration