Gastec 136LA 快速甲基溴测量探测管 CH3Br（1-36 ppm）
制造商: Gastec Model: 136LA - 联系
Indicator: 2 to 18 ppm
Measuring Range:
+ 1 to 18 ppm, Number of Pump Strokes 2
+ 18 to 36 ppm, Number of Pump Strokes 1
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Yellow
Reaction Principle: 2CH3Br +I2O5+ H2S2O7 → Br 2, Br 2 +O-Tolidine → Yellow product
Coefficient of Variation: 10% (for 1 to 6 ppm), 5% (for 6 to 18 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Details
Performance
| Measuring Range |
|
||
| Number of Pump Strokes |
|
||
| Correction Factor |
|
||
| Sampling Time | 1.5 minutes per pump stroke | ||
| Detecting Limit | 0.2 ppm (n=2) | ||
| Colour Change | White → Yellow | ||
| Reaction Principle | 2CH3Br +I2O5+ H2S2O7 → Br 2 Br 2 +O-Tolidine → Yellow product |
||
| Coefficient of Variation | 10% (for 1 to 6 ppm), 5% (for 6 to 18 ppm) | ||
| Shelf Life | 2 Years | ||
| Corrections for temperature & humidity | Unnecessary | ||
| Store the tubes at cool and dark place. | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Hologenes, NOx | + | Yellow | |
| Saturated halogenated hydrocarbons | + | Yellow |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| n-Butyl Bromide | 1.0 | 2 | 1 to 18 ppm |
| n-Butyl Bromide | 2.4 | 1 | 2.4 to 43.2 ppm |
| n-Propyl Bromide | 1.0 | 2 | 1 to 18 ppm |
| Chloro bromomethane | 0.7 | 2 | 0.7 to 12.6 ppm |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 1 ppm (2014) | - | 10 to 15% |
- 质量承诺
- 正品保修
- 送货到家
- 交易简单化
