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Toluene gas detection tube 122
甲苯气体检测管122 Toluene，Measuring Range 5 to10 ppm 10 to 300 ppm 300 to 690 ppm Number of Pump Strokes 2 1 1/2 Correction Factor 1/2 1 2.3 Sampling Time 1.
Product details
甲苯气体检测管122 Toluene
Toluene No.122
C6H5CH3
| Performance |
MeasuringRange |
5 to10 ppm |
10 to 300 ppm |
300 to 690 ppm |
Number of Pump Strokes |
2 |
1 |
1/2 |
Correction Factor |
1/2 |
1 |
2.3 |
SamplingTime |
1.5 minutes per pumpstroke |
||
DetectingLimit |
1 ppm (n=2) |
||
ColorChange |
White → Brown |
||
ReactionPrinciple |
C6H5CH3+ I2O5+ H2SO4→ I2 |
||
| Coefficient ofVariation | 10% (for10 to 100 ppm), 5% (for 200 to 300 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity |
Unnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance |
Concentration |
Interference |
Change color byitself |
Carbon Monoxide |
1000ppm |
2 layers |
Discolors palebrown |
Acetylene |
2000 ppm |
2 layers | Discolors palebrown |
Xylene |
1/5 time |
Plus error |
Discolorsbrown |
Hexane |
2000 ppm |
2 layers |
Discolors palebrown |
Benzene |
1/5 time |
Plus error |
Discolors paleyellow |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 50ppm | - | 1.4to 6.7% |
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