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关 键 词：四氯乙烯检测管
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发布时间：2010-12-20
Tetrachloroethylene No.133D Cl2C:CCl2 Performance Measuring Range 3 to 150 ppm Sampling Hours 1 to 8 hours Color 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 color by itself 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 -
