Trichloroethylene |
NO.132HH |
| Cl2C:CHCl |  |
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Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 3 minutes per pump stroke | ||
| Detecting Limit | 0.005% (n=1) | ||
| Colour Change | White → Yellowish brown (dark brown at demarcation) | ||
| Reaction Principle | Cl2C:CHCl+ I2O5 + H2S2O7 → I2 | ||
| Coefficient of Variation | 10% (for 0.05 to 0.3 %), 5% (for 0.3 to 1 %) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Carbon Monoxide | �� 0.1% | + | Dark brown |
| Acetylene | �� 0.1% | + | Dark brown |
| Acetone | �� 6 times | No | Brown |
| Ethylene | �� 0.5% | + | Dark brown |
| Toluene, Xylene | �� 3 times | No | Brown |
| HCs of C3 | + | Dark brown | |
| Tetrachloroethylene | + | Yellowish brown | |
| 1,1,1-Trichloroethane | + | Yellowish brown(ring) |
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% |
| Calibration gas generation | Static gas dilution method |
| TLV-TWA | TLV-STEL | Explosive range |
| 10 ppm | 25 ppm | - |
