Gastec 6 Quick-measuring Detector tubes Water vapour H2O (0.5~32mg/l)
ManufacturerGastec(View more products from this manufacturer)
Model6
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Indicator: 1 to 18 mg/L
Measuring Range:
+ 0.5 to 1 mg/L, Number of Pump Strokes 2
+ 1 to 18 mg/L, Number of Pump Strokes 1
+ 18 to 32 mg/L, Number of Pump Strokes 1/2
Sampling Time: 45 seconds per pump stroke
Colour Change: Yellowish Green → Purple
Reaction Principle: H2O + Mg(ClO4)2 → Mg(ClO4)2 H2O
Coefficient of Variation: 10% (for 1 to 6 mg/L), 5% (for 6 to 18 mg/L)
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 mg/L (n=2) | |||
| Colour Change | Yellowish Green → Purple | |||
| Reaction Principle | H2O + Mg(ClO4)2 → Mg(ClO4)2 |
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| Coefficient of Variation | 10% (for 1 to 6 mg/L), 5% (for 6 to 18 mg/L) | |||
| Shelf Life | 3 Years | |||
| Corrections for temperature & humidity | Temperature 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 |
| Alcohols, Ketones, Aldehydes, sulphur dioxide, Hydrogen chloride | ≧ 2000 ppm | + | No |
| Esters, Acrylonitrile | ≧ 5000 ppm | + | No |
| Ammonia | ≧ 1000 ppm | + | No |
| Nitrogen dioxide, Hydrogen cyanide |
≧ 500 ppm | + | No |
| Hydrogen sulphide | No | No |
| Calibration gas generation | Vaper pressure method |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |
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