Methyl Bromide Detection Tubes (0.1 to 3.0 ppm)

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Item #: 136LL
MFG: GasTec

UOM:Box of 10

$100.35 Was: $107.57
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Methyl Bromide Detection Tubes (0.1 to 3.0 ppm)

Measures Methyl Bromide With a Range of 0.1 to 3 ppm.

  • Measuring Range: 0.1 to 1.2 ppm, 1.2 to 3.0 ppm
  • Number of Pump Strokes: 2, 1
  • Correction Factor: 1, 2.5
  • Sampling Time: 2 minutes per pump stroke
  • Detecting Limit: 0.02 ppm (2 pump strokes)
  • Changes from White to Pale Purple
  • Corrections for temperature & humidity: Temperature correction is necessary
  • Relative Standard Deviation: 10% (for 0.1 to 0.4 ppm), 5% (for 0.4 to 1.2 ppm)
  • 2 Year Shelf Life
  • Reaction Principle:
    • CH3Br + CrO3 + H2S2O7 → Br2
    • Br2 + 3,3'-Dimethylnaphthidine → reaction product
  • Store the tubes at cool and dark place.
  • 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 ≧ 5/2 + Pale purple (≧ 2 ppm)
Trichloroethylene ≧ 1/1 + Pale purple (≧ 1 ppm)