Perchloroethylene Detection Tubes 2/a (2 - 300 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 vapors 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 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
At higher concentrations there may be created a reddish area at the beginning of the indicating layer.
||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