Chloroform Detection Tubes (0.5 to 30 ppm)

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Item #: 137LA
MFG: GasTec
UOM: Box of 10
Min Order: 0
Order Qty: Must order in multiples of 1
$103.49 Was: $110.86
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Product Details

Chloroform Detection Tubes (0.5 to 30 ppm)

Gastec Detection Tube No. 137LA measures Chloroform with a Range of 0.5-30 ppm.

  • Measuring Range:
    • 0.5 to 2 ppm
    • 2 to 12 ppm
    • 12 to 30 ppm
  • Number of Pump Strokes: 4, 2, 1
  • Correction Factor: 0.25, 1, 2.5
  • Sampling Time: 2 minutes per pump stroke
  • Detecting Limit: 0.2 ppm (4 pump strokes)
  • Changes from White to Pale Purple
  • Corrections for temperature & humidity: Temperature correction is necessary
  • Relative Standard Deviation: 10% (for 2 to 4 ppm), 5% (for 4 to 12 ppm)
  • 1 Year Shelf Life (in the refrigerator)
  • Reaction Principle:
    • CHCl3 + I2O5 + H2S2O7 → Cl2
    • Cl2 + 3,3'-Dimethylnaphthidine → Reaction product
  • Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below.
  • Comes in a Box of 5 pre tubes and 5 detector tubes

Possible coexisting substances and their interferences:

Substance Interference Changes color by itself to
Chlorine No No
Bromine No No
Iodine No No
Unsaturated halogenated hydrocarbons + Pale purple
Saturated halogenated hydrocarbons + Pale purple

Chloroform Detection Tubes (0.5 to 30 ppm)

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