Sulfur Dioxide Detection Tubes 20/a (20 - 2000 ppm)

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Item #: CH24201
MFG: Draeger
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$90.40
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Sulfur Dioxide Detection Tubes 20/a (20 - 2000 ppm)

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, such as:

  • Determining and measuring concentration peaks
  • Measuring personal exposure in the inhalation area
  • Detecting leaks in pipelines, gas installations etc.
  • Air analysis in sewers, shafts and confined spaces
Standard Measuring Range: 20 to 200 ppm
Number of strokes n: 10
Time for Measurement: approx. 3 min
Standard Deviation: ± 10 to 15 %
Color Change: brown yellow ──> white
Temperature: 0 to 40 °C
Absolute Humidity: < 30 mg H2O / L
Reaction Principle: SO2 + I2 + 2 H2O ──> H2SO4 + 2 HI
Cross Sensitivity: Hydrogen sulfide is indicated, with the same sensitivity. It is impossible to measure sulfur dioxide in the presence of hydrogen sulfide. Nitrogen dioxide will shorten the reading.
Extension of the Measuring Range Using n = 1+3 desorption strokes, multiply the reading by 10; the range of measurement is 200 - 2,000 ppm. The desorption strokes are to be taken in clean air (i.e. free of sulfur dioxide) immediately following the single pump stroke.