Perchloroethylene Detection Tubes 2/a (2 - 300 ppm)
For short-term measurements, more than 160 Draeger tubes are available to measure spot concentrations of specific gases. A wide range of gases and vapors 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
||20 to 300 ppm / 2 to 40 ppm
|Number of strokes n:
||1 / 5
|Time for Measurement
||approx. 30 sec. / approx. 3 min.
||± 15 to 20 %
||slightly greenish ──> grey blue
||15 to 30 °C
||< 25 mg H2O / L
||a) CCl2=CCl2 + MnO4- ──> Cl2
b) Cl2 + Diphenylbenzidine ──> gray blue reaction product
||Other chlorinated hydrocarbons, free halogens and hydrogen halides are also indicated. Petroleum hydrocarbon vapors result in a shortened reading once they exceed the following concentrations: 50 ppm with 5 strokes or 500 ppm with 1 strokes