Draeger Tube, Hydrogen Sulfide + Sulfur Dioxide
Product ID: CH28201
Price: $121.95
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Draeger Tube - Hydrogen Sulfide + Sulfur Dioxide 0.2%/A
Order No. CH 28 201

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. %.

View the entire Draeger Tubes & CMS Handbook