Application Range
Standard Measuring Range: 1 to 15 ppm
Number of Strokes n: 20
Time for Measurement: approx. 15 min
Standard Deviation: ± 15 to 30%
Color Change: violet -› yellow brown
Ambient Operating Conditions
Temperature: 15 to 30°C
Absolute Humidity: < 20 mg H2O / L
Reaction Principle
(CH3) 2S + KMnO4 -> MnIV + various oxidation products
Cross Sensitivity
Many organic compounds with C=C double bonds are indicated as well, but with different sensitivities. It is impossible to differentiate between them. H2S (hydrogen sulfide) is indicated with approximately twice the sensitivity. The tube H2S 5/b can be used
as a filtering tube. Then, with n = 20 pump strokes approx. 30 ppm H2S is retained. Methyl mercaptan is indicated with approximately twice the sensitivity.