Tetrachloroethylene Detection Tubes (2 to 250 ppm)
Gastec Detection Tube No. 133M measures Tetrachloroethylene with a Range of 2 to 250 ppm.
- Measuring Range:
- 2 to 5 ppm
- 5 to 100 ppm
- 100 to 250 ppm
- Number of Pump Strokes: 2, 1, 1/2
- Correction Factor: 0.4, 1, 2.5
- Sampling Time: 45 seconds per pump stroke
- Detecting Limit: 0.4 ppm (2 pump strokes)
- Changes from Yellow to Reddish Purple
- Reaction Principle:
- Cl2C:CCl2 + PbO2 + H2SO4 → HCl
- HCl + Base → Chloride
- Relative Standard Deviation: 10% (for 5 to 20 ppm), 5% (for 20 to 100 ppm)
- 2 Year Shelf Life (in the refrigerator)
- 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 |
| Bromine, Chlorine |
|
+ |
Reddish purple |
| Hydrogen chloride |
|
+ |
Reddish purple |
| Unsaturated halogenated hydrocarbons |
|
+ |
Reddish purple |
| Aromatic hydrocarbons |
≧ 100 ppm |
- |
No |
| Acetone |
≦ 200 ppm |
No |
No |
| Nitric oxide |
|
No |
No |
| Nitrogen dioxide |
|
No |
No |
Tetrachloroethylene Detection Tubes (2 to 250 ppm)
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