Gastec 133HA 四氯乙烯检测管Cl2C:CCl2(7~900ppm)

Indicator: 20 to 300 ppm
Measuring Range: 
+ 7 to 20 ppm, Number of Pump Strokes 2
+ 20 to 300 ppm, Number of Pump Strokes 1
+ 300 to 900 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
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)
Nr. of tests: 10
Pump: GV-100S/110S

Detail

Catalog

Manual

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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