| Vinyl chloride | CH2:CHCl | NO.131LB |
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| Performance |
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Measuring Range |
0.25 to 1 ppm |
1 to 20 ppm |
20 to 70 ppm |
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Number of Pump Strokes |
4 |
2 |
1 |
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Correction Factor |
1/4 |
1 |
3.5 |
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Sampling Time |
1.5 minutes per pump stroke |
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Detecting Limit |
0.05 ppm (n=4) |
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Color Change |
Yellow |
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Reaction Principle |
Vinyl chloride is oxidized and produce an intermediate |
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| Coefficient of Variation | 10% (for 1 to 5 ppm), 5% (for 5 to 20 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. | |||
| Possible coexisting substances and their interferences | (NOTE) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Chlorine, Hydrogen chloride |
1/10 time |
Plus error |
Produce purple stain |
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Alcohols, Esters, Ketones |
- |
No effect |
No discoloration |
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1,2-Dichloroethylene |
1/10 time |
Plus error |
Produce purple stain |
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Trichloroethylene, |
1/10 time |
Plus error |
Produce purple stain |
| Aromatic hydrocarbons | - | No effect | No discoloration |
| Calibration gas generation | Permeation tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 1 ppm | - | 3.6 to 23% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Purple