Gastec 8H Quick-measuring Detector tubes Chlorine Cl2 (25~1000 ppm)
ManufacturerGastec(View more products from this manufacturer)
Model8H
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Indicator: 50 to 500 ppm
Measuring Range:
+ 25 to 50pm, Number of Pump Strokes 2
+ 50 to 500 ppm, Number of Pump Strokes 1
+ 500 to 1000 ppm, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: White → Vermilion
Reaction Principle: Cl2 + o - Tolidine → Vermilion products
Coefficient of Variation: 10% (for 50 to 100 ppm), 5% (for 100 to 500 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 | 5 ppm (n=2) | |||
| Colour Change | White → Vermilion (reddish orange) | |||
| Reaction Principle | Cl2 + o - Tolidine → Vermilion products | |||
| Coefficient of Variation | 10% (for 50 to 100 ppm), 5% (for 100 to 500 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 |
| Bromine | + | Vermilion | |
| Chlorine dioxide | + | Vermilion | |
| Iodine | + | Vermilion |
Other substance measurable with this detector tube
| Substance | Correction Factor | No. of pump strokes | Measuring Range |
| Chlorine dioxide | 0.5 | 1 | 25 to 250 ppm |
| Calibration gas generation | Permeation tube method |
| TLV-TWA | TLV-STEL | Explosive range |
| 0.5 ppm | 1 ppm | - |
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