Drager Short Term Detection Tubes - Methyl Bromide 0.2/a
These Drager short-term detection tubes are for Methyl Bromide (0.2/a) and have a measurement range of 0.2 to 2 ppm.
They may also detect a range of other substances including vinyl chloride or carbon tetrachloride (< 2 ppm no indication).
It’s important to note that methyl bromide cannot be measured in the presence of perchloroethylene or trichloroethylene. Sulfuryl fluoride, phosphine, ethylene oxide, ammonia, hydrocyanic acid, chloropicrin and formaldehyde below their AGW/TLV values are not indicated. Ethylene dibromide is indicated with 1.2 times its sensitivity.
- Designed for short-term, on-the-spot measurement
- Can take between 10 seconds to 15 minutes to gather a reading
- Applications may include concentration fluctuations in the workplace, measurement of contaminants in breathing zone, and confined spaces
- Can be used as pre-entry checks
Application Range | |
Standard Measuring Range: | 0.2 to 2 ppm / 2 to 8 ppm |
Reverse activation (n) | 1 (1A) / 1 (1A) |
Number of Strokes n: | 5 / 2 |
Time for Measurement: | approx. 8 min. / approx. 4 min. |
Standard Deviation: | ± 15 to 20 % |
Color Change: | light color --> green |
Ambient Operating Conditions | |
Temperature: | 2 to 40 °C |
Absolute Humidity: | < 20 mg/L |
Reaction Principle | |
CH3 Br + H2S2O7 + chromate --> Br2 Br2 + o-tolidine --> green reaction product |
|
Cross Sensitivity | |
Vinyl chloride or carbon tetrachloride: < 2 ppm no indication. Methyl bromide cannot be measured in the presence of perchloroethylene or trichloroethylene. Sulfuryl fluoride, phosphine, ethylene oxide, ammonia, hydrocyanic acid, chloropicrin and formaldehyde below their AGW/TLV values are not indicated. Ethylene dibromide is indicated with 1.2 times its sensitivity. | |
Additional Information | |
One reverse activation stroke with air or gas sample |