Gastec 17L Quick-measuring Detector tubes Hydrogen Fluoride HF (0.09~72ppm)
ManufacturerGastec(View more products from this manufacturer)
Model17L
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Indicator: 0.2 to 10 ppm
Measuring Range:
+ 0.09 to 0.2 ppm, Number of Pump Strokes 5
+ 0.2 to 10 ppm, Number of Pump Strokes 3
+ 10 to 72 ppm, Number of Pump Strokes 1
Sampling Time: 1 minute per pump stroke
Colour Change: Yellow → Brown
Coefficient of Variation: 10% (0.2 to 2 ppm), 5% (2 to 10 ppm)
Nr. of tests: 10
Pump: GV-100S/110S
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 | 0.05 ppm (n=5) | |||
| Colour Change | Yellow → Brown | |||
| Reaction Principle | Hydrogen fluoride reacts with indicator to produce reddish brown stain. | |||
| Coefficient of Variation | 10% (for 0.2 to 2 ppm), 5% (for 2 to 10 ppm) | |||
| Shelf Life | 2 Years | |||
| Corrections for temperature & humidity | Humidity correction is necessary | |||
| Store the tubes at cool and dark place. | ||||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Nitric acid | ≧ 1/5 | + | Reddish purple |
| Hydrogen chloride | ≧ 1/2 | + | Reddish purple |
| Nitrogen dioxide | No | No |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.5ppm | C2 ppm | - |
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