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上海豫东电子科技有限公司
主营产品： 恶臭检测仪 应急检测箱 水质安全检测箱 水质检测管 红外测温仪 红外热像仪 |
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上海豫东电子科技有限公司
主营产品： 恶臭检测仪 应急检测箱 水质安全检测箱 水质检测管 红外测温仪 红外热像仪 |
| 参考价 | 面议 |
Performance Measuring Range 0.5 to 50 mg/L Sampling Time 2 minutes Detecting Limit 0.4 mg/L Colour Change White → Yellow Reaction Principle Cr6+ + Pb（CH3COO）2 → PbCrO4 Shelf Life 3 Years Corrections for temperature & humidity Water temperature correction is necessary Store the tubes at cool and dark place. Possible coexisting substances and their interferences （NOTE）
| Performance | |||
| Measuring Range | 0.5 to 50 mg/L | ||
| Sampling Time | 2 minutes | ||
| Detecting Limit | 0.4 mg/L | ||
| Colour Change | White → Yellow | ||
| Reaction Principle | Cr6+ + Pb（CH3COO）2 → PbCrO4 | ||
| Shelf Life | 3 Years | ||
| Corrections for temperature & humidity | Water temperature correction is necessary | ||
| Store the tubes at cool and dark place. | |||
| Possible coexisting substances and their interferences （NOTE） | |||
| Substance | Concentration | Interference | Change colour by itself to |
| Cl- | 20 mg/L | + | No |
| CH3COO- | 20 mg/L | + | No |
| NO3- | 30 mg/L | + | No |
| S2- | 0.5 mg/L | Unclear | Brown （0.5 mg/L ） |
| SO42- | 10 mg/L | + | No |
| PO43- | 5 mg/L | + | No |
