Gastec 6LP Quick-measuring Detector tubes Water vapour H2O (3-100LB/MMCF)
ManufacturerGastec(View more products from this manufacturer)
Model6LP
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Indicator: 3 to 40 LB/MMCF
Measuring Range:
+ 3 to 40 LB/MMCF, Number of Pump Strokes 1
+ 40 to 100 LB/MMCF, Number of Pump Strokes 1/2
Sampling Time: 1.5 minute per pump stroke
Colour Change: Yellow → Green
Reaction Principle: H2O + Mg(ClO4)2 → Mg(ClO4)2 H2O
Coefficient of Variation: 10% (for 3 to 10 LB/MMCF), 5% (for 10 to 40 LB/MMCF)
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 | 1.5 minutes per pump stroke | ||
| Detecting Limit | 2 LB/MMCF (n=1) | ||
| Colour Change | Yellow → Green | ||
| Reaction Principle | H2O + Mg(ClO4)2 → Mg(ClO4)2  H2O |
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| Coefficient of Variation | 10% (for 3 to 10 LB/MMCF), 5% (for 10 to 40 LB/MMCF) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
| *(may become purple with high humidity) | |||
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Change colour by itself to |
| Sulphur dioxide | ≦ 15ppm | No | No |
| Nitrogen dioxide,Hydrogen sulphide | ≦ 30ppm | No | No |
| Hydrogen cyanide | ≦ 45ppm | No | No |
| Methyl ethyl ketone | ≦ 70ppm | No | No |
| Ethyl acetate | ≦ 100ppm | No | No |
| Acrylonitrile | ≦ 55ppm | No | No |
| Acetaldehyde | ≦ 50 ppm | No | No |
| Methanol | ≧ 100 ppm | + | Green |
| Triethylene glycol | No | No |
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