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简单介绍：
76H 四氢噻吩检测管Tetrahydrothiophene，二甲苯气体检测管123L Xylene，水蒸汽检测管6LLP Water vapour，1,1-二氯乙烯检测管130L Vinylidene chloride，氯乙烯检测管131LB Vinyl chloride，醋酸乙烯酯检测管143 Vinyl acetate，三氯乙烯检测管132M Trichloroethylene
详情介绍：
76H 四氢噻吩检测管Tetrahydrothiophene
Tetrahydrothiophene No.76H
C4H8S
| Performance |
MeasuringRange | 10 to 200 ppm |
Number of PumpStroke | 1 |
CorrectionFactor | 1 |
SamplingTime | 1.5 minutes per pumpstroke |
DetectingLimit | 2 ppm (n=1) |
ColorChange | Pink → PaleYellow |
ReactionFormula | C4H8S + MnO4 (Pink) → Pale Yellow Product |
| Coefficient ofVariation | 10% (for 10 to 60ppm), 5% (for 80 to 200 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 | 3 ppm | No | Pale pink (wholelayer) |
Ethylene | 5000 ppm | No | Pale pink (wholelayer) |
Propylene | 2000 ppm | No | Pale pink (wholelayer) |
Methanol | 2000 ppm | No | Pale pink (wholelayer) |
Hydrogensulphide | 300 ppm | No | Pale pink (wholelayer) |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| - | - | - |