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醋酸丁酯检测管142 Butyl acetate，Measuring Range 0.05 to 0.8% Number of Pump Strokes 2 Correction Factor 1 Sampling Time 1.5 minutes per pump stroke Detecting Limit 0.002% (n=2)醋酸丁酯检测管价格
详情介绍：
醋酸丁酯检测管142 Butyl acetate
Butyl acetate No.142
CH3CO2(CH2)3CH3(CH3CO2C4H9)
| Performance |
MeasuringRange | 0.05 to 0.8% |
Number of PumpStrokes | 2 |
CorrectionFactor | 1 |
SamplingTime | 1.5 minutes per pumpstroke |
DetectingLimit | 0.002% (n=2) |
ColorChange | Orange → Darkgreen |
ReactionPrinciple | CH3CO2(CH2)3CH3 + Cr6+ H2SO4 → Cr3+ |
| Coefficient ofVariation | 15% (for 0.01 to 0.2%), 10% (for 0.2 to 0.8 %) |
| ShelfLife | 3 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 |
Sulfurdioxide | 500 ppm | Plus error | Discolors green |
Hydrogensulfide | 500 ppm | Plus error | Discolors dark green |
Alcohols, Esters,Ketones | - | Plus error | Discolors dark green |
Propane | 2000 ppm | Plus error | Dark green (Whole layer) |
Aromatic HCs | 500 ppm | Plus error | Discolors Greenishbrown |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 150ppm | 200ppm | 1.7 to 7.6% |