Tetrachloroethylene

NO.133LL
Cl2CFCCl2
Performance
Measuring Range
0.1 to 0.2 ppm 0.2 to 3.0 ppm 3.0 to 9.0 ppm
Number of Pump Strokes
2 1 1/2
Correction Factor
1/2 1 3
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
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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