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76H tetrahydrothiophene detection tube
76H tetrahydrothiophene detection tube Tetrahydrophene, xylene gas detection tube 123L Xylene, water vapor detection tube 6LLP Water vapor, 1,1-dichlo
Product details
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 isnecessary |
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 |
- | - | - |
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