ریجنت ست برای اندازه گیری سولفید با روش متیلن بلو Sulfide Reagent Set, Methylene Blue For determination of Sulfide by the Methylene Blue Method, using Hach Method 8131 and visual test kits. Photometric range: 5 - 800 µg/L sulfide. Test kit ranges: 0.01 - 0.55 to 2.5 - 11.25 mg/L sulfide. Set contains 2 100-mL bottles each of Sulfide 1 and Sulfide 2 Reagents. Approximately 100 tests.