Specifications:

• Hach Hydrogen Sulfide Color Disc 0 - 11.25 mg/L 60 tests.
• 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.