Gastec 126 Quick-measuring Detector tubes Chlorobenzene C6H5Cl (2~500ppm)
ManufacturerGastec(View more products from this manufacturer)
Model126
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Indicator: 10 to 200 ppm
Measuring Range:
+ 2 to 5 ppm, Number of Pump Strokes 2
+ 5 to 200 ppm, Number of Pump Strokes 1
+ 200 to 500 ppm, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: White → Gray
Reaction Principle: C6H5Cl+ I2O5 + H2S2O7 → I2
Coefficient of Variation: 15% (for 5 to 50 ppm), 10% (for 50 to 200 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time |
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| Detecting Limit | 0.2 ppm (n=2) | |||
| Colour Change | White → Gray | |||
| Reaction Principle | C6H5Cl+ I2O5 + H2S2O7 → I2 | |||
| Coefficient of Variation | 15% (for 5 to 50 ppm), 10% (for 50 to 200 ppm) | |||
| Shelf Life | 3 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 |
| Carbon monoxide |  0.1% |
No (2 layers) | Pale brown (whole layer) |
| Acetylene, Hexane, Ethylene | 0.2% |
No (2 layers) | Pale brown (whole layer) |
| Alcohols, Ketones | 1% |
+ | No |
| Esters | 0.2% |
+ | No |
| Aromatic hydrocarbons | + | Gray |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 10 ppm(2014) | - | 1.3 to 9.6% |
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