Phosphine |
NO.7LA |
Measuring Range |
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Number of Pump Strokes |
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Correction Factor |
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Sampling Time | 1.5 minutes per pump stroke | ||||
Detecting Limit | 0.02 ppm (n = 10) | ||||
Colour Change | Yellow → Red | ||||
Reaction Principle | PH3 +3HgCl2 → P(HgCl)3 + 3HCl HCl + Base Chloride |
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Coefficient of Variation | 10% (for 0.1 to 0.4 ppm), 5% (for 0.4 to 1.5 ppm) | ||||
Shelf Life | 2 Years | ||||
Corrections for temperature & humidity | Unnecessary | ||||
Store the tubes at cool and dark place. |
Substance | Concentration | Interference | Change colour by itself to |
Arsine | 1/10 time | + | Red |
Hydrogen chloride | No | No | |
Diborane | No | No |
Calibration gas generation | High pressure gas cylinder method |
TLV-TWA | TLV-STEL | Explosive range |
0.3 ppm | 1 ppm | - |