Sulphide |
NO.201H |
 |
 |
Performance
| Measuring Range | 0.02 to 0.2 mg |
| Sampling Time | 45 seconds per 1 pomp stroke |
| Detecting Limit | 0.002 mg |
| Colour Change | White → Brown |
| Reaction Principle | Gus generation tube : Sulphides + H2SO4 → H2S Detector tube : H2S + Pb(CH3COO)2 → PbS |
| Shelf Life | 3 Years |
| Corrections for temperature & humidity | Unnecessary |
| Coefficient of Variation | 5% (for 0.02 to 0.2 mg) |
Possible coexisting substances and their interferences (NOTE)
| Substance | Concentration | Interference | Changes colour by itself to |
| Chloride ion | No | No | |
| Chromate ion | No | No | |
| Carbonate ion | No | No |
| Calibration gas generation | Static gas dilution method |
