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Indicator: 3 ~ 20 mg/L
Measuring Range: 1 ~ 20 mg/L
Sampling Time: 5 minute
Colour Change: White → Orange
Reaction Principle: Cu2+ + Reduction Agent → Cu+ + Bathocuprim, Cu+ → Complex compound
Nr. of tests: 10
| 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 in the refrigerator to keep at 10ºC (50ºF) or below. | |
| 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) |
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Dissolved sulphide detector tube
211H / 211M / 211 / 211LL
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Liquid detector tube
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