Ozone |
NO.18M |
| O3 |  |
 |
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=5) | |||
| Colour Change | Orange → Pale yellow | |||
| Reaction Principle | O3 + Indicator → Chemical reaction compound | |||
| Coefficient of Variation | 10% (for 20 to 60 ppm), 5% (for 60 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 |
| Hydrogen chloride | No | Red | |
| Hydrogen fluoride | No | Red | |
| Boron trifluoride | No | Red | |
| Phosphine | No | Red | |
| Arsine | No | Red | |
| Chlorine | + | Pale yellow | |
| Nitrogen dioxide | + | Pale yellow |
| Calibration gas generation | Ozone generater |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.08 ppm | - | - |
