| Toluene | C6H5CH3 | NO.122 | |
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| Performance |
|
Measuring Range |
5 to10 ppm |
10 to 300 ppm |
300 to 690 ppm |
|
Number of Pump Strokes |
2 |
1 |
1/2 |
|
Correction Factor |
1/2 |
1 |
2.3 |
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Sampling Time |
1.5 minutes per pump stroke |
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|
Detecting Limit |
1 ppm (n=2) |
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|
Color Change |
White |
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Reaction Principle |
Toluene reacts with iodine pentoxide to |
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| Coefficient of Variation | 10% (for 10 to 100 ppm), 5% (for 200 to 300 ppm) | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity |
Unnecessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Carbon Monoxide |
1000ppm |
2 layers |
Discolors pale brown |
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Acetylene |
2000 ppm |
2 layers |
Discolors pale brown |
|
Xylene |
1/5 time |
Plus error |
Discolors brown |
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Hexane |
2000 ppm |
2 layers |
Discolors pale brown |
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Benzene |
1/5 time |
Plus error |
Discolors pale yellow |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 50ppm | - | 1.4 to 6.7% |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Brown
I2