149 甲基丙烯酸乙酯檢測管149
具體成交價以合同協(xié)議為準(zhǔn)
- 公司名稱 上海儀在機(jī)電科技有限公司
- 品牌
- 型號 149
- 產(chǎn)地
- 廠商性質(zhì) 經(jīng)銷商
- 更新時間 2018/6/8 1:49:13
- 訪問次數(shù) 618
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甲基丙烯酸乙酯檢測管149
的詳細(xì)介紹
甲基丙烯酸乙酯檢測管149 Methyl metacrylate 49
CH2:C（CH3）CO2CH3
| Performance |
| Measuring Range | 10 to 200 ppm | 200 to 500 ppm |
| Number of PumpStrokes | 2 | 1 |
| CorrectionFactor | 1 | 2.5 |
| Sampling Time | 4 minutes per pumpstroke | |
| Detecting Limit | 1 ppm （n=2） | |
| Color Change | Yellow → Paleblue | |
| Reaction Principle | CH2:C（CH3）CO2CH3 + Cr6+ + H2SO4 → Cr3+ | |
| Coefficient ofVariation | 10% （for 10 to 50ppm）, 5% （for 50 to 200 ppm） | |
| ShelfLife | 2Years | |
| 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 |
| Alcohols, Esters,Ketones | - | Plus error | Produce pale bluediscoloration |
| Othersubstance measurable with this detector tube |
| Tube 149 Reading（n=2） | 10 | 20 | 30 | 50 | 100 | 150 | 200 |
| Allyl isothiocyanateconc. （ppm） | 5 | 10 | 15 | 30 | 70 | 130 | 200 |
| Calibration gasgeneration | Diffusion tubemethod | |
| TLV-TWA | TLV-S | Explosive range |
| 50ppm | 100ppm | 1.7 to8.2% |
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