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简单介绍：
四氢噻吩检知管76 C4H8S，Measuring Range 1 to 10 ppm Number of Pump Stroke 4 Correction Factor 1 Sampling Time 1.5 minutes per pump stroke Detecting Limit 0.25 ppm (n=4) Color Change Pink
详情介绍：
四氢噻吩检知管76 C4H8S
Tetrahydrothiophene No.76
C4H8S
| Performance |
MeasuringRange | 1 to 10 ppm |
Number of PumpStroke | 4 |
CorrectionFactor | 1 |
SamplingTime | 1.5 minutes per pumpstroke |
DetectingLimit | 0.25 ppm (n=4) |
ColorChange | Pink → PaleYellow |
ReactionFormula | C4H8S + MnO4 (Pink) → Pale Yellow Product |
| Coefficient ofVariation | 10% (for 1 to 3ppm), 5% (for 3 to 10 ppm) |
| 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 | 1ppm | No | Discolor whole layerto pale pink |
Ethylene | 1000 ppm | No | Discolor whole layerto pale pink |
Propylene | 500 ppm | No | Discolor whole layerto pale pink |
Methanol | 300 ppm | No | Discolor whole layerto pale pink |
Hydrogensulfide | 30 ppm | No | Discolor whole layerto pale pink |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |