Hydrogen Sulfide 0.2 %/A, 0.2 - 7 Vol.-%, Part # CH28101, 10 Tests 

Application Range

Standard Measuring Range: 0.2 to 7 vol. %

Number of Strokes n: 1 + 2 desorption strokes in clean air

Time for Measurement: approx. 2 min

Standard Deviation: ± 5 to 10 %

Color Change: pale blue š black

Ambient Operating Conditions

Temperature: 0 to 60 °C

Absolute Humidity: max. 40 mg H2O / L

Reaction Principle

H2S + Cu2+ š CuS + 2 H+

Cross Sensitivity

In the presence of sulfur dioxide, the indicating layer can change to a yellowish color, but the hydrogen sulfide measurement is not affected. Comparable concentrations of mercaptan will interfere with the reading.