Tetrachloroethylene

NO.133HA
Cl2CFCCl2
Performance
Measuring Range
7 to 20 ppm 20 to 300 ppm 300 to 900 ppm
Number of Pump Strokes
2 1 1/2
Correction Factor
1/3 1 3
Sampling Time 45 seconds per pump stroke
Detecting Limit 0.5 ppm (n=2)
Colour Change Yellow → Reddish purple
Reaction Principle Cl2C:CCl2 + PbO2 + H2SO4 → HCl
HCl + Base → Chloride
Coefficient of Variation 10% (for 20 to 100 ppm), 5% (for 100 to 300 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
Chlorine, Bromine,
Hydrogen chloride
  + Reddish purple
1,1,1-Trichloroethane 3000 ppm + Reddish purple
Trichloroethylene   + Reddish purple
Calibration gas generation Diffusion tube method
TLV-TWA TLV-STEL Explosive range
25 ppm 100 ppm -


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