Application Range
Standard Measuring Range: 0.5 to 4 ppm / 0.1 to 1 ppm
Number of Strokes n: 3 / 9
Time for Measurement: approx. 3 min / approx. 9 min
Standard Deviation: ± 15 to 20 %
Color Change: light grey -> blue
Ambient Operating Conditions
Temperature: 15 to 30 °C
Absolute Humidity: max. 30 mg H2O / L
Reaction Principle
a) CCI2=CCI2 + MnO4– -> CI2
b) CI2 + diphenylbenzidine ä blue reaction product At higher concentrations there may be created a reddish area at the beginning of the indicating layer.
Cross Sensitivity
Other chlorinated hydrocarbons, free halogens and hydrogen halides are also indicated. Petroleum hydrocarbon vapors result in a shortened reading
once they exceed the following concentrations:
40 ppm with 9 strokes or 160 ppm with 3 strokes.