Xylene |
NO.123L |
| C6H4iCH3j2 |  |
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Performance
| Measuring Range |
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| Number of Pump Strokes |
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| Correction Factor |
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| Sampling Time | 1 minute per pump stroke | ||
| Detecting Limit | 1 ppm (n=2) | ||
| Colour Change | White → Brown | ||
| Reaction Principle | C6H4(CH3)2 + I2O5 + H2SO4 → I2 | ||
| Coefficient of Variation | 10% (for 2 to 30 ppm), 5% (for 30 to 100 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 |
| Acetylene , Ethylene , Hexane | No | No | |
| Alcohols , Esters , Ketones | No | No | |
| Aromatic hydrocarbons | + | Brown |
| Calibration gas generation | Diffusion tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 100 ppm | 150 ppm | 1.0 to 7.0% |
