Ozone |
NO.18L |
| O3 |  |
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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 | 45 seconds per pump stroke | |||
| Detecting Limit | 0.01 ppm (n=10) | |||
| Colour Change | Blue → White | |||
| Reaction Principle | 2 O3 + C16H10N2O2 → 2C8H5NO2 + 2O2 | |||
| Coefficient of Variation | 10% (for 0.05 to 0.2 ppm), 5% (for 0.2 to 0.6 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 |
| Bromine | 1 ppm | + | White |
| Hypochlorous acid | + | White | |
| Nitrogen dioxide | 1 ppm | + | White |
| Oxidant | + | White | |
| Chlorine | 10 ppm | + (Bleaching) |
unclear demarcation |
| Water vapour | 100% relative humdity | + | unclear demarcation |
| Calibration gas generation | Ozone generater |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.08 ppm | - | - |
