Ethanol |
NO.112 |
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Measuring Range |
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Number of Pump Strokes |
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Correction Factor |
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Sampling Time | 3 minutes 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. |
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 |
1000 ppm | - | 3.3 to 19% |