| Methanol | CH3OH | NO.111L | |
|
|
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| Performance |
|
Measuring Range |
20 to 40 ppm |
40 to 1000 ppm |
|
Number of Pump Strokes |
2 |
1 |
|
Correction Factor |
1/2 |
1 |
|
Sampling Time |
4 minutes per pump stroke |
|
|
Detecting Limit |
5 ppm (n=2) |
|
|
Color Change |
Pink |
|
|
Reaction Principle |
Methyl alcohol reduces potassium dichromate to |
|
| Coefficient of Variation |
15% (for 40 to 200 ppm), 10% (for 200 to 1000 ppm) |
|
| Shelf Life | 3 Years | |
| Corrections for temperature & humidity |
Temperature correction is necessary | |
| Store the tubes at cool and dark place. | ||
| Possible coexisting substances and their interferences | (NOTE) |
|
Substance |
Concentration |
Interference |
Change color by itself |
|
Alcohols |
- |
Plus error |
Produce similar stain by themselves. |
| Other substance measurable with this detector tube |
|
Substance |
Correction |
Pump Strokes |
Measuring Range |
|
Ethylene Chlorohydrine |
by scale |
3 |
20 to 200 ppm |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 200ppm | 250ppm | 6 to 36% |
|
|
| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Pale blue
Cr3+