| Ethanol | C2H5OH | NO.112L | |
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| Performance |
|
Measuring Range |
50 to 100 ppm |
100 to 2000 ppm |
|
Number of Pump Strokes |
2 |
1 |
|
Correction Factor |
1/2 |
1 |
|
Sampling Time |
4 minutes per pump stroke |
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Detecting Limit |
5 ppm (n=2) |
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Color Change |
Pink |
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Reaction Principle |
Ethyl alcohol reduces cromic acid to discolor pale blue stain. |
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| Coefficient of Variation | 15% (for 50 to 500 ppm), 10% (for 500 to 2000 ppm) | |
| 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 color by itself |
|
Alcohols |
- |
Plus error |
Produce similar stain by themselves. |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 1000ppm | - | 3.3 to 19% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Pale blue
Cr3+