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乙醚无水检测管161
点击次数：185发布时间：2012/3/20 11:20:38
更新日期：2014/4/30 16:30:16
所 在 地：其它
产品型号：161
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详细内容
无水检测管161 Ethylether （C2H5）2O
的详细介绍无水检测管161 Ethylether （C2H5）2O
Ethylether No.161
（C2H5）2O
| Performance |
| MeasuringRange | 0.04 to 1.0% |
| Number of Pump Strokes | 1 |
| Correction Factor | 1 |
| SamplingTime | 2 minutes per pumpstroke |
| DetectingLimit | 0.001% （n=1） |
| ColorChange | Yellowish brown →Dark green |
| ReactionPrinciple | （C2H5）2O+ Cr6+ + H2SO4 → Cr3+ |
| Coefficient ofVariation | 10% （for 0.04 to 0.2%）, 5% （for 0.2 to 1.0 %） |
| 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 |
| Propane | 0.2% | Plus error | Produce dark greenfor whole layer |
| Alcohols, Esters,Ketones | - | Plus error | Produce greenishbrown |
| Aromatic HCs. | 500 ppm | Plus error | Produce greenishbrown |
| Hydrogensulfide | 500 ppm | Plus error | Produce greenstain |
| Sulfurdioxide | 500 ppm | Plus error | Produce greenstain |
| Acetylene | 0.3% | Plus error | Greenish brown forwhole layer |
| Othersubstance measurable with this detector tube |
| Substance | Correction Factor | Pump Strokes | Measuring Range |
| Isopropylether | 0.45 | 2 | 0.018 to 0.45% |
| Methyl ether | 0.85 | 1 | 0.03 to 0.85% |
| Tetrahydrofuran | 1.4 | 1 | 0.056 to 1.4% |
| Toluene | by scale | 1 | 0.02 to0.8% |
| Calibration gasgeneration | Static gas dilutionmethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 400ppm | 500ppm | 1.9to 48% |
