Gastec 112 Quick-measuring Detector tubes Ethanol C2H5OH (0.01~ 7.5%)
ManufacturerGastec(View more products from this manufacturer)
Model112
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Indicator: 0.1 to 2.5%
Measuring Range:
+ 0.01 to 0.05%, Number of Pump Strokes 2
+ 0.05 to 2.5%, Number of Pump Strokes 1
+ 0.05 to 2.5%, Number of Pump Strokes 1/2
Sampling Time: 1 mimute per pump stroke
Colour Change: Pink → Pale blue
Reaction Principle: C2H5OH + Cr6+ + H2SO4 → Cr3+
Coefficient of Variation: 15% (for 0.05 to 0.5 %), 10% (for 0.5 to 2.5 %)
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 | 0.004% (n=2) | |||
| Colour Change | Pink → Pale blue | |||
| Reaction Principle | C2H5OH + Cr6+ + H2SO4 → Cr3+ | |||
| Coefficient of Variation | 15% (for 0.05 to 0.5 %), 10% (for 0.5 to 2.5 %) | |||
| 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 |
| Carbon monoxide | No | No | |
| Carbon dioxide | No | No | |
| Alcohols | + | Pale blue |
| Calibration gas generation | Static gas dilution method |
| TLV-TWA | TLV-STEL | Explosive range |
| - | 1000ppm(2014) | 3.3 to 19% |
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