| Tetrahydrofuran | C4H8O | NO.159 | |
|
|
|||
| Performance |
|
Measuring Range |
20 to 50 ppm |
50 to 800 ppm |
|
Number of Pump Strokes |
2 |
1 |
|
Correction Factor |
0.4 |
1 |
|
Sampling Time |
5 minutes per pump stroke |
|
|
Detecting Limit |
2 ppm (n=2) |
|
|
Color Change |
Pink |
|
|
Reaction Principle |
Tetrahydrofuran is reduced by potassium dichlomate |
|
| Coefficient of Variation | 15% (for 50 to 200 ppm), 10% (for 200 to 800 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 |
Produces pale blue stain. |
| Other substance measurable with this detector tube |
|
Substance |
Correction Factor |
Pump Strokes |
Measuring Range |
|
1.4-Dioxane |
by scale |
2 |
25 to 140ppm |
| Calibration gas generation | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 200ppm | 250ppm | 1.5 to 12.4% |
|
|
| Copyright(c) 2001 GASTEC CORPORATION. All rights reserved. |
Pale Blue
Cr3+