Hydrogen Sulfide + Sulfur Dioxide Detection Tubes 0.2%/A (0.02-7Vol%)
For short-term measurements more than 160 Draeger-Tubes are available to measure the so-called spot concentrations of specific gases. A wide range of different gases and vapours can be detected and measured, e.g.: Determining and measuring concentration peaks, Measuring personal exposure in the inhalation area, Detecting leaks in pipelines, gas installations etc., and Air analysis in sewers, shafts and confined spaces.
Contains 10 tubes
|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 %|
|Colour Change||brown ─> pale yellow|
|Temperature||0 to 40° C|
|Absolute Humidity||max. 40 mg H2O / L|
|Reaction Principle||H2S + I2 ──> 2 Hl + Sx|
SO2 + I2 + H2O ──> 2 Hl + 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|
|Using n=10, divide the reading by 10;|
the measuring range will be 0.02 to