Acetaldehyde |
NO.92L |
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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 | 0.2 ppm (n=1) | |
Colour Change | Yellow → Brown | |
Reaction Principle | 3CH3CHO + (NH2OH)3H3PO4 → H3PO4 H3PO4 + Base → Phosphate |
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Coefficient of Variation | 10% (for 1 to 6 ppm), 5% (for 6 to 20 ppm) | |
Shelf Life | 2 Years | |
Corrections for temperature & humidity | Temperature correction is necessary | |
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Substance | Concentration | Interference | Change colour by itself to |
Ammonia | ![]() |
No | No |
Acetic acid | ![]() |
+ | Brown |
Acids | + | Brown | |
Aldehydes | + | Brown | |
Ketones | + | Brown |
Calibration gas generation | Diffusion tube method |
TLV-TWA | TLV-STEL | Explosive range |
- | C 25 ppm@ | 4 to 60% |