| Tetrachloroethylene | Cl2C:CCl2 | NO.133LL | |
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| Performance |
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Measuring Range |
0.1 to 0.2ppm |
0.2 to 3.0ppm |
3.0 to 9.0ppm |
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Number of Pump Strokes |
2 |
1 |
1/2 |
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Correction Factor |
1/2 |
1 |
3 |
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Sampling Time |
1.5 minute per pump stroke |
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Detecting Limit |
0.05 ppm (n=2) |
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Color Change |
Yellow |
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Reaction Principle |
Tetrachloroethylene is decomposed by nascent oxygen by oxidizing agent |
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| Coefficient of Variation |
10% (for 0.2 to 1 ppm), 5% (for 1 to 3 ppm) |
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| 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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Hydrogen chloride, Chlorine, |
1/2 time |
Plus error |
Produce purple stain |
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1,2 Dichloroethylene |
- |
Plus error |
Produce purple stain |
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1,1,1-Trichloroethane |
80 ppm |
No effect |
No discoloration up to 80 ppm |
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Toluene, Xylene |
- |
No effect |
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. |
Purple