Tetrachloroethylene Detection Tubes (7 to 900 ppm)

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Item #: 133HA
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$94.13 Was: $103.59
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Tetrachloroethylene Detection Tubes (7 to 900 ppm)

Gastec Detection Tube No. 133HA measures Tetrachloroethylene with a Range of 7 to 900 ppm.

  • 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 (2 pump strokes)
  • Changes from Yellow to Reddish Purple
  • Corrections for temperature & humidity: Temperature correction is necessary
  • Reaction Principle:
    • Cl2C:CCl2 + PbO2 + H2SO4 → HCl
    • HCl + Base → Chloride
  • Relative Standard Deviation: 10% (for 20 to 100 ppm), 5% (for 100 to 300 ppm)
  • Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
  • 2 Year Shelf Life (in the refrigerator)

Possible coexisting substances and their interferences:

Substance: Concentration: Interference: Changes color by itself to:
Bromine, Chlorine + Reddish purple
Hydrogen chloride + Reddish purple
Trichloroethylene + Reddish purple
1,1,1-Trichloroethane ≧ 3000 ppm + Reddish purple