Copper Ion |
NO.284 |
| Cu |  |
 |
Performance
| Measuring Range | 1 to 20 mg/L |
| Sampling Time | 5 minutes |
| Detecting Limit | 0.5 mg/L |
| Colour Change | White → Orange |
| Coefficient of Variation | Cu2+ + Reduction Agent → Cu+ + Bathocuprim Cu+ → Complex compound |
| Shelf Life | 2 Years |
| Corrections for temperature & humidity | Unnecessary |
| Store the tubes at cool and dark place. | |
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Changes colour by itself to |
| Zn | 5 mg/L | + | No ( 100mg/L) |
| Al | 50 mg/L | + | No ( 100mg/L) |
| Cr6+ | 100 mg/ L | No | Pale yellow ( 100 mg/L) |
| Co | 100 mg/L | No | No ( 100mg/L) |
| CN- | 0.2 mg/L |  |
No ( 100mg/L) |
| Fe | 100 mg/L | No | No ( 100mg/L) |
| Ni | 70 mg/L | + | No ( 100mg/L) |
| Mn | 30 mg/L | + | No ( 100mg/L) |
