Phosphine Detection Tubes 0.01/a (0.01 - 1.0 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, 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||0.1 to 1.0 ppm / 0.01 to 0.3 ppm|
|Number of strokes n:||3 / 10|
|Time for Measurement||approx. 2.5 min. / approx. 8 min|
|Standard Deviation||± 10 to 15 %|
|Color Change||yellow ──> red|
|Temperature||2 to 40 °C|
|Absolute Humidity||<20 mg H2O / L|
|Reaction Principle||PH3 + HgCl2 ──> HCl + Hg-Phosphide|
HCl + pH Indicator ──> red reaction product
|Cross Sensitivity||Arsine is indicated with different sensitivity.|
Up to 6 ppm sulfur dioxide or 15 ppm
hydrochloric acid does not interfere, but
higher concentrations cause plus errors.
More than 100 ppm ammonia leads to minus
errors. Hydrocyanic acid does not affect the
3 stroke test, but with the 10 stroke test
minus errors of up to 50 % can occur.