Acrolein |
NO.93 |
Measuring Range |
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Number of Pump Strokes |
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Correction Factor |
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Sampling Time | 2 minutes per pump stroke | ||
Detecting Limit | 2 ppm (n=4) | ||
Colour Change | Yellow → Red | ||
Reaction Principle | 3CH2CHCHO + (NH2OH)3 • H3PO4 → H3PO4 + Base → Phosphate |
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Coefficient of Variation | 10% (for 10 to 200 ppm), 5% (for 200 to 800 ppm) | ||
Shelf Life | 2 Years | ||
Corrections for temperature & humidity | Temperature correction is necessary | ||
Store the tubes in the refrigerator to keep at 10ºC (50ºF) or below |
Substance | Concentration | Interference | Change colour by itself to |
Ammonia | No | ||
sulphur dioxide | 1/5 time | + | No |
Acetaldehyde | 1/5 time | + | Red |
Acetone | 1 time | + | Red |
Methyl Ethyl Ketone | 3 times | + | Red |
Calibration gas generation | Diffusion tube method |
TLV-TWA | TLV-STEL | Explosive range |
- | C 0.1 ppm | 2.8 to 31% |