Application Range
Standard Measuring Range: 5 to 100 / 2 to 50 ppm
Number of Strokes n: 5/ 10
Time for Measurement: approx. 1 min / approx. 2 min
Standard : ± 10 to 15 %
Color Change: yellow -> blue grey
Ambient Operating Conditions
Temperature: 10 to 30 °C
Absolute Humidity: max 30 mg H2O / L
Reaction Principle
a) NO + CrVI -> NO2
b) NO2 + o-diphenylbenzidine ¨->blue grey reaction product
Cross Sensitivity
Chlorine and ozone are indicated with different sensitivities.