Dräger Tube Hydrogen Sulphide Diox 0.2% CH28201 [10s]

CH28201 Draeger Tube Hydrogen Sulfide + Sulfur Dioxide 0.2%/A Gas Detection Tube Detection Range: 0.02 - 7 Vol.% (10 tubes, 10 tests per box) 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 minutes Standard Deviation: ± 5 to 10% Color Change: brown to bright yellow Ambient Operating Conditions Temperature: 0 to 40° C ~ 32 to 104° F Absolute Humidity: max. 40 mg H2O / L Reaction Principle H2S + I2 2 HI + S2 SO2 + I2 + 2H2O 2 HI + H2SO4 Cross Sensitivity All substances oxidized by iodine are indicated, but with different sensitivities. It is impossible to measure hydrogen sulfide and sulfur dioxide in the presence of such substances. Extension of the Measuring Range Using n = 10, divide the reading by 10; the measuring range will be 0.02 to 0.7 vol. %.