Tetrahydrothiophene Detection Tubes (1 to 10 ppm)
Gastec Detection Tube No. 76 measures Tetrahydrothiophene with a Range of 1 to 10 ppm.
- Measuring Range: 1 to 10 ppm
- No. of Pump Strokes: 4 (400 ml)
- Correction Factor: 1
- Sampling Time: 1 minute per pump stroke
- Detecting Limit: 0.25 ppm (4 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 1 to 3 ppm), 5 % (for 3 to 10 ppm)
- Comes in a Box of 5 detector tubes and 5 pre tubes
- Store the tubes at cool and dark place
Possible coexisting substances and their interferences:
| Substance |
Concentration |
Interference |
Changes color by itself to |
| Hydrogen sulphide |
≦ 30 ppm |
No |
Pale pink (whole layer) |
| Ethyl mercaptan |
≦ 1 ppm |
No |
Pale pink (whole layer) |
| Ethylene |
≦ 1000 ppm |
No |
Pale pink (whole layer) |
| Propylene |
≦ 500 ppm |
No |
Pale pink (whole layer) |
| Methanol |
≦ 300 ppm |
No |
Pale pink (whole layer) |
Tetrahydrothiophene Detection Tubes (1 to 10 ppm)
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