Tetrahydrofuran Detection Tubes (20 to 800 ppm)
Gastec Detection Tube No. 159 measures Tetrahydrofuran with a Range of 20-800 ppm.
- Measuring Range:
- 20 to 50 ppm
- 50 to 800 ppm
- Number of Pump Strokes: 2, 1
- Correction Factor: 0.4, 1
- Sampling Time: 3 minutes per pump stroke
- Detecting Limit: 2 ppm (2 pump strokes)
- Changes from Pale vermilion to Pale blue
- Corrections for temperature & humidity: Temperature correction is necessary
- 3 Year Shelf
- Reaction Principle: C4H8O + Cr6+ + H2SO4 → Cr3+
- Relative Standard Deviation: 15% (for 50 to 200 ppm), 10% (for 200 to 800 ppm)
- Store the tubes at cool and dark place.
Possible coexisting substances and their interferences:
| Substance |
Interference |
Changes color by itself to |
| Alcohols |
+ |
Pale blue |
Other substance measurable with this detector tube:
| Substance: |
Correction Factor: |
No. of Pump Strokes: |
Measuring Range: |
| 1,4-Dioxane |
by scale |
2 |
25 to 140ppm |
Tetrahydrofuran Detection Tubes (20 to 800 ppm)
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