Tetrachloroethylene Detection Tubes (7 to 900 ppm)
Gastec Detection Tube No. 133HA measures Tetrachloroethylene with a Range of 7 to 900 ppm.
- Measuring Range:
- 7 to 20 ppm
- 20 to 300 ppm
- 300 to 900 ppm
- Number of Pump Strokes: 2, 1, 1/2
- Correction Factor: 1/3, 1, 3
- Sampling Time: 45 seconds per pump stroke
- Detecting Limit: 0.5 ppm (2 pump strokes)
- Changes from Yellow to Reddish Purple
- Corrections for temperature & humidity: Temperature correction is necessary
- Reaction Principle:
- Cl2C:CCl2 + PbO2 + H2SO4 → HCl
- HCl + Base → Chloride
- Relative Standard Deviation: 10% (for 20 to 100 ppm), 5% (for 100 to 300 ppm)
- Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
- 2 Year Shelf Life (in the refrigerator)
Possible coexisting substances and their interferences:
| Substance: |
Concentration: |
Interference: |
Changes color by itself to: |
| Bromine, Chlorine |
|
+ |
Reddish purple |
| Hydrogen chloride |
|
+ |
Reddish purple |
| Trichloroethylene |
|
+ |
Reddish purple |
| 1,1,1-Trichloroethane |
≧ 3000 ppm |
+ |
Reddish purple |
Tetrachloroethylene Detection Tubes (7 to 900 ppm)
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