Gastec 17 Quick-measuring Detector tubes Hydrogen Fluoride HF (0.25-100ppm)
ManufacturerGastec(View more products from this manufacturer)
Model17
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Indicator: 0.5 to 20 ppm
Measuring Range:
+ 0.25 to 0.5 ppm, Number of Pump Strokes 7
+ 0.5 to 20 ppm, Number of Pump Strokes 4
+ 20 to 100 ppm, Number of Pump Strokes 1
Sampling Time: 45 second per pump stroke
Colour Change: Yellow → Brown
Reaction Principle: HF + Indicator → Chemical reaction compound
Coefficient of Variation: 10% (for 0.5 to 5 ppm), 5% (for 5 to 20 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 | 45 seconds per pump stroke | |||
| Detecting Limit | 0.1 ppm (n=7) | |||
| Colour Change | Yellow → Brown | |||
| Reaction Principle | Hydrogen fluoride reacts with indicator to produce brownish pink colour. HF + Indicator → Chemical reaction compound |
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| Coefficient of Variation | 10% (for 0.5 to 5 ppm), 5% (for 5 to 20 ppm) | |||
| Shelf Life | 3 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 |
| Hydrogen chloride, Nitric acid | 1/5 time | + | Brown |
| Chlorine, Nitrogen dioxide | 1/10 time | + | Brown |
Other substance measurable with this detector tube
| Substance | Correction Factor | pump stroke | Temperature | Absolute Humidity | Colour Change |
| Fluorine | 2.5 | 1 | 20ºC (68ºF) | 9 mg/L | Produces a brown stain |
| 1.0 | 1 | 20ºC (68ºF) | 3 mg/L | Produces a brown ring stain |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.5ppm(2014) | C2 ppm(2014) |
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