Gastec 174LL 快速1,3-丁二烯检测管CH2：CHCH：CH2（0.5~5 ppm）
制造商Gastec(查看更多该品牌的产品)
Model174LL
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Indicator: 0.5 to 5 ppm
Measuring Range: 0.5 to 5 ppm, Number of Pump Strokes 1
Sampling Time: 3 minute per pump stroke
Colour Change: Pink → Pale Yellow
Reaction Principle: CH2:CHCH:CH2+ KMnO4 → Reaction Product
Coefficient of Variation: 10% (for 0.5 to 1 ppm), 5% (for 1 to 5 ppm)
Nr. of tests: 5
Pump: GV-100S/110S
Performance
| Measuring Range | 0.5 to 5 ppm |
| Number of Pump Strokes | 1 |
| Correction Factor | 1 |
| Sampling Time | 3 minutes per pump stroke |
| Detecting Limit | 0.1 ppm (n=1) |
| Colour Change | Pink → Pale Yellow |
| Reaction Principle | CH2:CHCH:CH2+ KMnO4 → Reaction Product |
| Coefficient of Variation | 10% (for 0.5 to 1 ppm), 5% (for 1 to 5 ppm) |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Unnecessary |
| Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below. | |
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Ammonia | No | No | |
| CO & CO2 | No | No | |
| H2S, HCN | No | No | |
| Acetylene | 50 ppm | + | White |
| Olefins | + | Pale yellow |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 2 ppm(2014) | - | 2.0 to 12% |
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