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Indicator: 10 ~ 200 mg/L
Measuring Range: 10 ~ 200 mg/L
Sampling Time:
Colour Change:
Reaction Principle:
Nr. of tests: 10
| Measuring Range | 10 to 200 mg/L |
| Sampling Time | 1 minutes |
| Detecting Limit | 3 mg/L |
| Colour Change | Brown → White |
| Reaction Principle | 2Cl- + Ag2CrO4 → 2AgCl + CrO42- |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Unnecessary |
| Store the tubes at cool and dark place. | |
| Substance | Concentration | Interference | Changes colour by itself to |
| CN- | ≧ 10 mg/L | + | White ( ≧ 1mg/L) |
| Br- | ≧ 10 mg/L | + | White ( ≧ 10mg/L) |
| SCN- | ≧ 1 mg/L | Unreadable | White ( ≧ 100mg/L) |
| Fe2+ | ≧ 20 mg/L |  |
No ( ≦ 1000mg/L) |
| Fe3+ | ≧ 20 mg/L | + | White ( ≧ 20mg/L) |
| F- | ≦ 1000 mg/L | No | No( ≦ 1000mg/L) |
| I- | ≧ 20 mg/L | + | Pale yellow ( ≧ 20mg/L) |
| S2- | ≧ 3 mg/L | + | Blackish gray ( ≧ 3mg/L) |
| SO42- | ≦ 1000 mg/L | No | No ( ≦ 1000mg/L) |
| Substance | Correction Factor | Measuring Range |
| Br- | 2.4 | 24 to 480 mg/l |
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Dissolved sulphide detector tube
211H / 211M / 211 / 211LL
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Liquid detector tube
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