| 上海豫東電子科技有限公司
主營產(chǎn)品: 惡臭檢測儀 應急檢測箱 水質(zhì)安全檢測箱 水質(zhì)檢測管 紅外測溫儀 紅外熱像儀 |
| 上海豫東電子科技有限公司
主營產(chǎn)品: 惡臭檢測儀 應急檢測箱 水質(zhì)安全檢測箱 水質(zhì)檢測管 紅外測溫儀 紅外熱像儀 |
| 參考價 | 面議 |
聯(lián)系方式:張小姐查看聯(lián)系方式
更新時間:2017-08-27 15:28:39瀏覽次數(shù):1682
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Performance Measuring Range 2 to 300 ppm Sampling Time 2 minutes Detecting Limit 0.5 ppm Colour Change White → Brown Reaction Principle S2- + Pb(CH3COO)2 → PbS Shelf Life 3 Years Corrections for temperature & humidity Unnecessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences (NOTE) Substance Concentration Interference Change colour by itself to Cl- 15000 ppm + No CrO42- 50 ppm - Yellow CO32- 500 ppm + No SO32- 200 ppm - No S2O32- 100 ppm + No

| Performance | |||
| Measuring Range | 2 to 300 ppm | ||
| Sampling Time | 2 minutes | ||
| Detecting Limit | 0.5 ppm | ||
| Colour Change | White → Brown | ||
| Reaction Principle | S2- + Pb(CH3COO)2 → PbS | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Unnecessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substancesand their interferences (NOTE) | |||
| Substance | Concentration | Interference | Change colour by itselfto |
| Cl- | 15000 ppm | + | No |
| CrO42- | 50 ppm | - | Yellow |
| CO32- | 500 ppm | + | No |
| SO32- | 200 ppm | - | No |
| S2O32- | 100 ppm | + | No |