Hydrogen chloride(for Low Humidity) |
NO.14R |
| HCl |  |
 |
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 | 10 ppm (n=4) | ||
| Colour Change | Purple → Pale pink | ||
| Reaction Principle | Hydrogen chloride reacts with indicator to produce pale pink stain. | ||
| Coefficient of Variation | 10% (for 200 to 800 ppm), 5% (for 800 to 2500 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 | No | No | |
| Nitric oxide | No | No | |
| Chlorine | 4ppm | + | White( 1ppm ) |
| Carbon dioxide | No | No | |
| Nitrogen dioxide | 1000ppm | + | White( 1000ppm ) |
| Hydrogen sulphide | 5% |  |
No |
| Sulphur dioxide | 100ppm | + | Yellow |
| n-Hexane | No | No |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-STEL | Explosive range |
| - | C 2 ppm | - |
