Water Vapour 0.1, 1 - 40 mg/L, Part # CH23401, 10 Tests 

Application Range

Standard Measuring Range: 1 to 40 mg/L

Number of Strokes n: 10

Time for Measurement: approx. 2 min

Standard Deviation: ± 10 to 15 %

Color Change: yellow š red brown

Ambient Operating Conditions

Temperature: 0 to 40 °C

Reaction Principle

H2O + SeO2 + H2SO4 š reddish brown reaction product

Cross Sensitivity

Low molecular weight alcohols are indicated. A variety of other organic compounds, such as petroleum hydrocarbons are indicated.