Ammonia nitrogen mainly refers to non ionized ammonia（NH₃）And ammonium ions（NH⁴⁺）Nitrogen exists in various forms, among which non ionized ammonia is the main factor causing toxicity to aquatic organisms. Ammonia nitrogen is a nutrient in water bodies that can lead to eutrophication. Our country's environmental protection department has taken many measures to require the detection of ammonia nitrogen in industrial wastewater and domestic sewage samples from industries such as fertilizers, smelting, and synthetic detergents. Discharge standards for urban sewage treatment plants（GB 18918-2002 stipulates that the first level standard for ammonia nitrogen shall not exceed 5mg/L, and the second level standard shall not exceed 25mg/L.

To eliminateUser configurationmanufacturereagentand testingThe tedious processoperation, improveDetection efficiency based on Nessler's reagent method（HJ 353-2009 standard has introduced this ammonia nitrogen reagent.