四氯乙烯檢測133D Tetrachloroethylene
Tetrachloroethylene 33D
Performance |
Measuring Range | 3 to 150 ppm |
Sampling Hours | 1 to 8 hours |
Color Change | Yellow → Purple |
Reaction Principle | Cl2CCl2+ PbO2 + H2SO4 → HCl |
Coefficient ofVariation | 15%(for 25 to 50 ppm-hr), 10% (for 50 to 150 ppm-hr) |
ShelfLife | 1 Year |
Correctionsfor temperature & humidity | Temperature correction isnecessary |
Store the tubes inthe refrigerator to keep at 10ºC (50ºF) orbelow. |
Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Interference | Change color by itself |
Hydrogen chloride,Chlorine | - | Purple |
1,2-Dichloroethylene,Trichloroethylene | + | Purple |
Toluene, Xylene | No | No |
Calibration gasgeneration | Diffusion tubemethod |
TLV-TWA | TLV-S | Explosive range |
25 ppm | 100 ppm | - |