Tetrahydrothiophene Detection Tubes (10 to 100mg/m3)
Gastec Detection Tube No. 76M measures Tetrahydrothiophene with a Range of 10 to 100 mg/m3.
- Measuring Range: 10 to 100 mg/m3
- Number of Pump Strokes: 2 (200 ml)
- Correction Factor: 1
- Sampling Time: 1 minute per pump stroke
- Detecting Limit: 2 mg/m3 (2 pump strokes)
- Changes from Pink to Pale Yellow
- Corrections for temperature & humidity: Temperature correction is necessary
- 2 Year Shelf Life
- Reaction Principle: C4H8S + MnO4 → Reaction Product
- Relative Standard Deviation: 10% (for 10 to 30 mg/m3), 5% (for 30 to 100 mg/m3)
- Store the tubes at cool and dark place
- Comes in a Box of 5 pre tubes and 5 detector tubes
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| 1-Butene |
≦ 1000 ppm |
No |
Pale pink (whole layer) |
| tert-Butyl mercaptan |
≦ 10 mg/m3 |
No |
Pale pink (whole layer) |
| Ethyl mercaptan |
≦ 2 ppm |
No |
Pale pink (whole layer) |
| Ethylene |
≦ 2000 ppm |
No |
Pale pink (whole layer) |
| Propylene |
≦ 1000 ppm |
No |
Pale pink (whole layer) |
| Methanol |
≦ 1000 ppm |
No |
Pale pink (whole layer) |
| Hydrogen sulfide |
≦ 80 ppm |
No |
Pale pink (whole layer) |
Tetrahydrothiophene Detection Tubes (10 to 100mg/m3)
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