Item #: CH28401
MFG: Draeger
Price: $73.30

Polytest Detection Tubes - Qualitative

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 RangeQualitative determination of easily
oxidable substances.
Number of strokes n:5
Time for Measurementapprox. 1.5 min.
Standard Deviation---
Color Changewhite ──>  brown, green or violet 
                 (depending on substance)
Temperature0 to 50 °C
Absolute Humiditymax 50 mg H2O / L
Reaction PrincipleCO + I2O5  ──> I2 + CO2
Cross SensitivityBased on the reaction principle, many
easily oxidised compounds are indicated,
several examples are shown below:

200 ppm Acetone        10 ppm Acetylene
50 ppm Ethylene 1 ppm Arsine
10 ppm Octane 50 ppm Benzene
500 ppm Propane 100 ppm Butane
10 ppm Styrene 5 ppm Carbon Monoxide1 ppm Carbon Disulfide  2 ppm Hydrogen Sulfide
20 ppm Perchloroethylene  10 ppm Toluene, Xylene
Additional InformationIf there is no reading, this does not always
indicated that easily oxidizable substances
are not present. In the individual case, the
use of Draeger Polytest should be qualified
by independent methods, particularly when
combustible gases and vapors close to the
LEL, or toxic substances are suspected.
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