The water quality ammonia nitrogen detector is a detection device suitable for industrial wastewater, aquaculture, river monitoring, swimming venues and other fields. Combined with rapid colorimetric detection reagents, it can "quickly, simply, accurately and stably" detect the ammonia nitrogen content in water bodies; The device is equipped with multiple light sources corresponding to different detection wavelengths, which can simultaneously meet the needs of Nessler's reagent method and salicylic acid method for detecting ammonia nitrogen content in water.Water quality ammonia nitrogen detectorSuitable for pure water plants, waterworks, domestic sewage treatment plants, industrial wastewater, aquaculture, river monitoring, swimming venues, water source protection, production monitoring, scientific research experiments, etc.