Tetrachloroethylene |
NO.133D |
| Cl2C:CCl2 |
 |
Performance
| Measuring Range | 3 to 150 ppm |
| Sampling Hours | 1 to 8 hours |
| Colour Change | Yellow → Purple |
| Reaction Principle | Cl2CCl2 + PbO2
+ H2SO4 →
HCl HCl + Base → Chloride |
| Coefficient of Variation | 15% (for 25 to 50 ppm-hr), 10% (for 50 to 150 ppm-hr) |
| Shelf Life | 1 Year |
| Corrections for temperature & humidity | Temperature correction is necessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. | |
Possible coexisting substances and their interferences (NOTE)
| Substance | Interference | Change colour by itself to |
| Hydrogen chloride, Chlorine | + | Purple |
| 1,2-Dichloroethylene, Trichloroethylene | + | Purple |
| Toluene, Xylene | No | No |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 25 ppm | 100 ppm | - |