| 1,1,1-Trichloroethane | CH3CCl3 | NO.135L | |
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| Performance |
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Measuring Range |
6 to 20 ppm |
20 to 200 ppm |
200 to 900 ppm |
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Number of Pump Stroke |
2 |
1 |
1/2 |
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Correction Factor |
0.3 |
1 |
4.5 |
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Sampling Time |
3 minutes per pump stroke |
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Detecting Limit |
3 ppm (n=2) |
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Color Change |
White |
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Reaction Formula |
Methyl chloroform reacts with oxidizing agent to produce intermediate products then it reacts with detecting agent to produce pale pink stain. |
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| Coefficient of Variation |
10% (for 20 to 60 ppm), 5% (for 60 to 200 ppm) |
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| Shelf Life | 2 Years | ||
| Corrections for temperature & humidity |
Temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences | (NOTE) |
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Substance |
Concentration |
Interference |
Change color by itself |
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Halogens |
- |
Plus error |
Discolor pale pink stain |
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Nitrogen oxides |
- |
Plus error |
Discolor pale pink stain |
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Saturated halogenated hydrocarbons |
- |
Plus error |
Discolor pale pink stain |
| Other substance measurable with this detector tube |
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Substance |
Correction Factor: |
No. of pump strokes |
Measuring range |
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1,2-Dichloroethane |
5.2 |
1 |
104 to 1040 ppm |
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1,1,2,2-Tetrabromoethane |
0.046 |
4 |
0.92 to 9.2 ppm |
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1,2,3-Trichloropropane |
1.8 |
4 |
36 to 360 ppm |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 350ppm | 450ppm | - |
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| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Pale Pink