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Indicator: 0.1~2.0ppm
Measuring Range:
+ 0.02 to 0.05 ppm, Number of Pump Strokes 5
+ 0.05 to 2 ppm, Number of Pump Strokes 2
+ , Number of Pump Strokes 1
Sampling Time: 1 minute per pump stroke
Colour Change: Yellow → Red
Reaction Principle: B2H6 + 6HgCl2 → 2B2(HgCl)3 + 6HCl, HCl + Base → chloride
Coefficient of Variation: 10% (for 0.05 to 0.4 ppm), 5% (for 0.4 to 2 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
| 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 | 0.01 ppm (n=5) | |||
| Colour Change | Yellow → Red | |||
| Reaction Principle | Diborane reacts with mercuric chloride to produce hydrogen chloride. HCl react with indicator to discolour to red. B2H6 + 6HgCl2 → 2B2(HgCl)3 + 6HCl HCl + Base → chloride |
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| Coefficient of Variation | 10% (for 0.05 to 0.4 ppm), 5% (for 0.4 to 2 ppm) | |||
| Shelf Life | 2 Years | |||
| Corrections for temperature & humidity | Temperature correction is necessary | |||
| Store the tubes at cool and dark place. | ||||
| Substance | Concentration | Interference | Change colour by itself to |
| Arsine | 1/10 time | + | Red |
| Hydrogen selenide | 1/10 time | + | Red |
| Phosphine | 1/10 time | + | Red |
| Hydrogen chloride | 1/3 time | + | Red |
| Calibration gas generation | High pressure gas cylinder method |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.1 ppm (2014) | - |
