Chloroform Detection Tubes (0.3 to 4.5 ppm)

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Item #: 137LL
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 (0.3 to 4.5 ppm)

Gastec Detection Tube No. 137LL measures Chloroform with a Range of 0.3-4.5 ppm.

  • Measuring Range: 0.3 to 4.5 ppm
  • Number of Pump Strokes: 4
  • Correction Factor: 1
  • 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 0.3 to 1.5 ppm), 5% (for 1.5 to 4.5 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 Concentration Interference Changes color by itself to
Chlorine ≧ 6 ppm + Pale purple
Bromine ≦ 4.5 ppm No No
Iodine ≦ 4.5 ppm No No
1,1,1-Trichloroethane + Pale Purple
Trichloroethylene + Pale purple

Chloroform Detection Tubes (0.3 to 4.5 ppm)

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