Indicator: 10 ~ 50 mg/L
Measuring Range: 5 ~ 50 mg/L
Sampling Time: 3 minute
Colour Change: White → Red
Reaction Principle: Ni + Dimethyl glyoxime → Complex compound
Nr. of tests: 10
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 |
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