Draeger, Inc. - DRA CH28101 - DT Hydrogen Sulfide 0,2%/A (10)

Product Specific Information; Dräger-Tubes - Hydrogen Sulphide 0.2%/A, Short-term Tubes, 10 tests per box, By Dräger, P/N CH28101 Standard Measuring Range : 0.2 to 7 Vol.-% Number of Strokes (n) : 1 + 2 desorption strokesin air Time for Measurement : app. 2 min Standard Deviation : ± 5 to 10 % Colour Change : pale blue -> black Ambient Operating Conditions - Temperature : 0 to 60 °C Absolute Humidity : max. 40 mg H2O / L Reaction Principle - H2S + Cu2+ -> CuS + 2 H+ Cross Sensitivity - In the presence of sulphur dioxide, the indicating layer can change to a yellowish colour, but the hydrogen sulpide measurement is not affected. Comparable concentrations of mercaptan will interfere with the reading.