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简单介绍：
醋酸乙烯酯检测管143 Vinyl acetate，5 to 10 ppm 10 to 100 ppm 100 to 250ppm，能够在火灾或工业现场化学物质泄漏时5分钟内快速测定有毒有害物质的成份，进口应急侦毒箱，是为快速测定空气中的有毒有害气体及蒸气而设计的，它能够在**时间勘察事故现场存在的有毒有害气体。中国**预防控制中心CDC专用有毒有害气体应急检测箱
详情介绍：
醋酸乙烯酯检测管143 Vinyl acetate
Vinyl acetate No.143
CH3CO2CH:CH2
| Performance |
Measuring Range | 5 to 10 ppm | 10 to 100 ppm | 100 to 250ppm |
Number of Pump Strokes | 4 | 2 | 1 |
Correction Factor | 1/2 | 1 | 2.5 |
SamplingTime | 45 seconds per pumpstroke | ||
DetectingLimit | 1 ppm (n=4) | ||
ColorChange | White → Brown | ||
ReactionPrinciple | CH3CO2CH:CH2+C6H3(CH3)3+ H2S2O7 → Condensation Polymer (Brown) | ||
| Coefficient ofVariation | 15% (for10 to 20 ppm), 10% (for 20 to 100 ppm) | ||
| ShelfLife | 3Years | ||
| Corrections for temperature & humidity | Unnecessary | ||
| Store the tubes at cool and darkplace. | |||
| Possible coexisting substances and theirinterferences | (NOTE) |
Substance | Concentration | Interference | Change color by itself |
Aldehydes | - | Plus error | Brown |
Ketones | - | Plus error | Brown |
Ethylene | 1000ppm | Plus error | Yellow |
Vinylchloride | 500ppm | Plus error | Yellow |
| Othersubstance measurable with this detector tube |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-STEL | Explosive range |
| 10ppm | 15ppm | 2.6 to13.4% |