Methyl Bromide Detection Tubes (1 to 36 ppm)

Methyl Bromide Detection Tubes (1 to 36 ppm)

Gastec Detection Tube No. 136LA measures Methyl Bromide with a range of 1-36 ppm.

• Measuring Range: 1 to 18 ppm, 18 to 36 ppm
• Number of Pump Strokes: 2, 1
• Correction Factor: 1, 2
• Sampling Time: 1.5 minutes per pump stroke
• Detecting Limit: 0.2 ppm (2 pump strokes)
• Changes from White to Yellow
• Corrections for temperature & humidity: Unnecessary
• Relative Standard Deviation:
• Reaction Principle: 10% (for 1 to 6 ppm), 5% (for 6 to 18 ppm)
• 2 Year Shelf Life
• Reaction Principle:
  • CH₃Br + I₂O₅ + H₂S₂O₇ → Br₂
  • Br₂ + o-Tolidine → Yellow product
• Store the tubes at cool and dark place.
• Comes in a Box of 5 pre tubes and 5 detector tubes



Other substance measurable with this detector tube:

Substance:	Correction Factor:	No. of Pump Strokes:	Measuring Range: (ppm)
n-Butyl Bromide	2.4 1.0	1 2	2.4 to 43.2 1 to 18
n-Propyl Bromide	1.0	2	1 to 18
Chloro bromomethane	0.7	2	0.7 to 12.6