| Tetrachloroethylene | Cl2C:CCl2 | NO.133M |
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| Performance |
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Measuring Range |
2 to 5 ppm |
5 to 100 ppm |
100 to 250 ppm |
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Number of Pump Strokes |
2 |
1 |
1/2 |
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Correction Factor |
0.4 |
1 |
2.5 |
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Sampling Time |
1 minute per pump stroke |
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Detecting Limit |
0.4 ppm (n=2) |
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Color Change |
Yellow |
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Reaction Principle |
Tetrachloroethylene is decomposed by oxidizing agent to |
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| Coefficient of Variation | 10% (for 5 to 20 ppm), 5% (for 20 to 100 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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Nitric oxide, Nitrogen dioxide |
- |
No effect |
No discoloration |
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Chlorine, Bromine, |
- |
Plus error |
Produce reddish purple |
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Acetone |
200 ppm |
No effect |
No discoloration |
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Unsaturated halogenated HCs |
Plus error |
Produce reddish purple |
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Aromatic hydrocarbons |
100 ppm |
Minus error |
No discoloration |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 25ppm | 100ppm | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Reddish purple