Gastec 133LL Quick-measuring Detector tubes Tetrachloroethylene Cl2C：CCl2 (0.1 ~ 9.0 ppm)
ManufacturerGastec(View more products from this manufacturer)
Model133LL
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Indicator: 0.2 to 3.0 ppm
Measuring Range:
+ 0.1 to 0.2 ppm, Number of Pump Strokes 2
+ 0.2 to 3.0 ppm, Number of Pump Strokes 1
+ 3.0 to 9.0 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellow → Purple
Reaction Principle: Cl2C:CCl2 + PbO2 + H2SO4 → HCl, HCl + Base → Chloride
Coefficient of Variation: 10% (for 0.2 to 1 ppm), 5% (for 1 to 3 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1.5 minute per pump stroke | |||
| Detecting Limit | 0.05 ppm (n=2) | |||
| Colour Change | Yellow → Purple | |||
| Reaction Principle | Cl2C:CCl2 + PbO2 + H2SO4 → HCl HCl + Base → Chloride |
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| Coefficient of Variation | 10% (for 0.2 to 1 ppm), 5% (for 1 to 3 ppm) | |||
| Shelf Life | 2 Years | |||
| 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 | Concentration | Interference | Change colour by itself to |
| Hydrogen chloride, Chlorine | ≧ 1/2 time | + | Purple |
| 1,2 Dichloroethylene | + | Purple | |
| 1,1,1-Trichloroethane | ≦ 80 ppm | No | No (≦ 80 ppm) |
| Toluene, Xylene | No | No |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 25 ppm | 100 ppm | - |
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