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Indicator: 25 ~ 300 ppm
Measuring Range: 3 ~ 300 ppm
Sampling Hours: 1 to 8 hours
Colour Change: Yellow → Purple
Reaction Principle: Cl2C:CHCl + PbO2 + H2SO4 → HCl, HCl + Base → Chloride
Coefficient of Variation: 10% (for 25 to 300 ppm-hr)
Nr. of tests: 10
| Measuring Range | 3 to 300 ppm |
| Sampling Hours | 1 to 8 hours |
| Colour Change | Yellow → Purple |
| Reaction Principle | Cl2C:CHCl + PbO2 + H2SO4 → HCl HCl + Base → Chloride |
| Coefficient of Variation | 10% (for 25 to 300 ppm-hr) |
| Shelf Life | 1Year |
| Corrections for temperature & humidity | Temperature correction is necessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. | |
| Substance | Interference | Change colour by itself to |
| Hydrogen chloride, Chlorine | + | Purple |
| 1,2-Dichloroethylene, Tetrachloroethylene | + | Purple |
| Toluene, Xylene | No | No |
| Substance | Correction Factor | Sampling Time | Measuring Range |
| trans-1,2-Dichloroethylene | 2.0 | 1 to 8 hours | 6 to 600 ppm |
| Chlorine | 0.8 | 1 to 8 hours | 2.4 to 240 ppm |
| Hydrogen chloride | 0.6 | 1 to 8 hours | 1.8 to 180 ppm |
| Tetrachloroethylene | 0.5 | 1 to 8 hours | 1.5 to 150 ppm |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 10 ppm | 25 ppm | - |
