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简单介绍：
甲基溴检测管136LA Methyl bromide，Measuring Range 1 to 18 ppm 18 to 36 ppm ，二甲苯气体检测管123L Xylene，水蒸汽检测管6LLP Water vapour，1,1-二氯乙烯检测管130L Vinylidene chloride，氯乙烯检测管131LB Vinyl chloride，醋酸乙烯酯检测管143
详情介绍：
甲基溴检测管136LA Methyl bromide
Methyl bromide No.136LA
CH3Br
| Performance |
Measuring Range | 1 to 18 ppm | 18 to 36 ppm |
Number of PumpStrokes | 2 | 1 |
Correction Factor | 1 | 2 |
Sampling Time | 2 minutes per pumpstroke | |
Detecting Limit | 0.2 ppm (n=2) | |
Color Change | White → Yellow | |
Reaction Principle | 2CH3Br +I2O5+ H2S2O7 → Br 2 | |
| Coefficient ofVariation | 10%(for 1 to 6 ppm), 5% (for 6 to 18 ppm) | |
| ShelfLife | 2Years | |
| Correctionsfor temperature & humidity | Unnecessary | |
| Store the tubes at cool and darkplace. | ||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Hologenes,NOx | - | Plus error | Produce yellowstain |
Saturated halogenatedhydrocarbons | - | Plus error | Produce yellowstain |
| Othersubstance measurable with this detector tube |
Substance | Correction Factor | Pump Strokes | Measuring Range |
n-ButylBromide | 1.0 | 2 | 1 to 18 ppm |
n-ButylBromide | 2.4 | 1 | 2.4 to 43.2ppm |
| n-PropylBromide | 1.0 | 2 | 1 to 18ppm |
| Calibration gasgeneration | Permeation tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 1ppm | - | 10 to15% |