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Tetrahydrophene detection tube 76M Tetrahydrophiophene
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 D
Product details
四氢噻吩检测管76 M 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 isnecessary |
| 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 |
| - | - | - |
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