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简单介绍：
甲苯有毒气体检测管122L C6H5CH3 Toluene，Measuring Range 1 to 2 ppm 2 to 50 ppm 50 to 100 ppm Number of Pump Strokes 4 2 1 Correction Factor，甲苯有毒气体检测管122L C6H5CH3 Toluene
详情介绍：
甲苯有毒气体检测管122L C6H5CH3 Toluene
Toluene No.122L
C6H5CH3
| Performance |
MeasuringRange | 1 to 2 ppm | 2 to 50 ppm | 50 to 100 ppm |
Number of PumpStrokes | 4 | 2 | 1 |
CorrectionFactor | 1/2 | 1 | 2 |
SamplingTime | 1.5 minutes per pumpstroke | ||
DetectingLimit | 0.5 ppm (n=4) | ||
Color Change | White → Brown | ||
Reaction Principle | C6H5CH3 + I2O5 + H2SO4 → I2 | ||
| Coefficient ofVariation | 10% (for2 to 100 ppm), 5% (for 10 to 50 ppm) | ||
| ShelfLife | 3Years | ||
| Correctionsfor temperature & humidity | Unnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Interference | Change color by itself |
Acetylene, Ethylene,Hexane | No effect | Nodiscoloration |
Alcohols, Ketones,Esters | No effect | Nodiscoloration |
Aromatics | Plus error | Produces browncolor |
| Othersubstance measurable with this detector tube |
Substance | Correction Factor | Pump Strokes | Measuring Range |
Xylene | 4,2,1 | 1,2,4 | 2to 200ppm |
| Calibration Scale | |
Ethyl Benzene Conc.(ppm) |
|
Calibration Scale | |
Cumene Concentration(ppm) |
|
| Calibration Scale | |
Diethyl Benzene Conc.(ppm) |  |
| Calibration gasgeneration | Diffusion tube method | |
| TLV-TWA | TLV-STEL | Explosive range |
| 20 ppm | - | 1.4 to 6.7% |