The in-situ nutrient analyzer is achemical analyzer suitable for shallow water areas.Dissolvednutrientsincluding ammonia(NH3-N), nitrite (NO2-N), nitrate (NO3-N), phosphate (PO4-P) and silicate (SiO2-Si) canbemeasured. It is small in size, easy to carry andapply toinstall on buoys, shore stations, survey ships and other monitoring platforms. It is suitable for ocean, estuary, river, lake and other aquatic environments. Itprovideshigh-precision, continuous and stable data for eutrophication research, phytoplankton growth research and environmental change monitoring.