Trichloroethylene Detection Tubes (0.05 to 2.5%)
Gastec Detection Tube No. 132HH measures Trichloroethylene with a Range of 0.05 to 2.5 %.
- Measuring Range:
- 0.05 to 1.0 %
- 1.0 to 2.5 %
- Number of Pump Strokes: 1, 1/2
- Correction Factor: 1, 2.5
- Sampling Time: 45 seconds per pump stroke
- Detecting Limit: 0.005% (1 pump stroke)
- Changes from White to Yellowish Brown
(Brown at demarcation)
- Corretions for temperature & humidity: Temperature correction is necessary
- 3 Year Shelf Life
- Reaction Principle: Cl2C:CHCl + I2O5 + H2S2O7 → I2
- Relative Standard Deviation: 10% (for 0.05 to 0.3 %), 5% (for 0.3 to 1 %)
- Store the tubes at cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Acetylene, Carbon monoxide |
≧ 0.1 % |
+ |
Blackish brown |
| Ethylene |
≧ 0.5 % |
+ |
Blackish brown |
| Hydrocarbons (≧ C3) |
|
+ |
Blackish brown |
| Toluene, Xylene |
≦ 3 times |
No |
Brown |
| 1,1,1-Trichloroethane |
|
+ |
Yellowish brown (ring) |
| Tetrachloroethylene |
|
+ |
Yellowish brown |
| Acetone |
≦ 6 times |
No |
Brown |
Other substance measurable with this detector tube
| Substance |
Correction Factor |
No. of Pump Strokes |
Measuring Range |
| Tetrachloroethylene |
1.5 |
1 |
0.075 to 1.5 % |
Trichloroethylene Detection Tubes (0.05 to 2.5%)
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