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Hydrogen Sulfide: - Resulting from the anaerobic decomposition of organic matter, hydrogen sulfide is present in many water supplies.
- Sewage and industrial wastes are other sources of sulfide pollution. Highly toxic, this compound has a characteristic rotten egg odor, which can be detected long before harmful concentrations are reached.
- Sulfide reacts with colorimetric reagents to form a blue color, which is measured with a color disc.
| Method / Chemistry | Range (mg/L) | Smallest Increment | Approx. Number of Tests | Case Style | | Color disc / Methylene blue | 0-0.55 mg/L | 0.01 | 60 | 8.8x6.5x5.8 inches Blue Polypropylene Carrying Case | | 0-2.25 | 0.5 | 60 | | 0-11.25 | 2.5 | 30 |
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