Nickel Ion |
NO.291 |
| Ni |  |
 |
Performance
| Measuring Range | (5) to 50 mg/L |
| Sampling Time | 3 minutes |
| Detecting Limit | 5 mg/L |
| Colour Change | White → Red |
| Reaction Principle | Ni + Dimethyl glyoxime → Complex compound |
| 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 | Changes colour by itself to |
| Zn | 20 mg/L |  |
No ( 1000mg/L) |
| Al | 30 mg/L | |
No ( 1000mg/L) |
| Co | 3 mg/ L | + | Greenish brown ( 20 mg/L) |
| CN- | 10 mg/L | |
No ( 100mg/L) |
| Fe2+ | 5 mg/L | + | Brown ( 60 mg/L) |
| Fe3+ | 100 mg/L | |
No ( 1000mg/L) |
| Cu | 5 mg/L | + | Reddish brown / yellowish Green ( 50mg/L) |
| Calibration gas generation | @ |
