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简单介绍：
四氢噻吩检测管76M Tetrahydrothiophene，Measuring Range 10 to 100 mg/m3 Number of Pump Stroke 2 Correction Factor 1 Sampling Time 1.5 minutes per pump stroke Detecting Limit 2 mg/m3 (n=2)
详情介绍：
四氢噻吩检测管76M Tetrahydrothiophene
Tetrahydrothiophene No.76M
C4H8S
| Performance |
Measuring Range | 10 to 100mg/m3 |
Number of Pump Stroke | 2 |
Correction Factor | 1 |
Sampling Time | 1.5 minutes per pumpstroke |
Detecting Limit | 2 mg/m3 (n=2) |
Color Change | Pink → PaleYellow |
Reaction Formula | C4H8S + MnO4 (Pink) → Pale Yellow Product |
| Coefficient ofVariation | 10% (for 10 to 30mg/m3), 5% (for 30 to 100mg/m3) |
| ShelfLife | 2 Years |
| Correctionsfor temperature & humidity | Temperature correction is necessary |
| Store the tubes at cool and darkplace. | |
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Ethylmercaptan | 2 ppm | No | Discolor whole layerto pale pink |
Ethylene | 2000 ppm | No | Discolor whole layerto pale pink |
Propylene | 1000 ppm | No | Discolor whole layerto pale pink |
Methanol | 1000 ppm | No | Discolor whole layerto pale pink |
Hydrogensulfide | 80 ppm | No | Discolor whole layerto pale pink |
| 1-Butene | 1000 ppm | No | Discolor whole layerto pale pink |
| tert-Butyl Mercaptan | 10mg/m3 | No | Discolor whole layerto pale pink |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |