Tetrachloroethylene Detection Tubes (0.1 to 9ppm)
Gastec Detection Tube No. 133LL measures Tetrachloroethylene with a Range of 0.1 to 9.0 ppm.
- Measuring Range:
- 0.1 to 0.2 ppm
- 0.2 to 3.0 ppm
- 3.0 to 9.0 ppm
- Number of pump strokes: 2, 1, 1/2
- Correction Factor: 1/2, 1, 3
- Sampling Time: 1.5 minutes per pump stroke
- Detecting Limit: 0.05 ppm (2 pump strokes)
- Changes from Yellow to Purple
- Corrections for temperature & humidity: Temperature correction is necessary
- 2 Year Shelf Life (in the refrigerator)
- Reaction Principle:
- Cl2C:CCl2 + PbO2 + H2SO4 → HCl
- HCl + Base → Chloride
- Relative Standard Deviation: 10% (for 0.2 to 1 ppm), 5% (for 1 to 3 ppm)
- Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Chlorine |
≧ 1/2 |
+ |
Purple |
| Hydrogen chloride |
≧ 1/2 |
+ |
Purple |
| 1,2-Dichloroethylene |
|
+ |
Purple |
| 1,1,1-Trichloroethane |
≦ 80 ppm |
No |
No (≦ 80 ppm) |
| Toluene, Xylene |
|
No |
No |
| This detector tube can also be used with the Gastec Water Pollutant Analysis Systems to measure tetrachloroethylene in the water. With these systems, samples are collected by using a syringe. |
Other substance measurable with this detector tube:
| Substance:
|
Correction Factor:
|
No. of Pump Strokes:
|
Measuring Range:
|
| Pentachloroethane
|
20
|
1
|
40 to 500 ppm
|
Tetrachloroethylene Detection Tubes (0.1 to 9ppm)
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