YSI Pro Series 1004 Ammonium ISE, NH4+ Sensor

Product Code: 605104 The YSI® 605104 is a replaceable ammonium ion-selective electrode (NH₄⁺ ISE) designed for use with YSI Pro Series portable water quality meters. It enables rapid, direct measurement of ammonium concentrations in freshwater, making it ideal for environmental monitoring, wastewater treatment, aquaculture, and research applications. The sensor installs easily into compatible YSI field cables and works in conjunction with the meter's integrated temperature compensation to provide accurate field measurements. The YSI 605104 is compatible with: YSI ProQuatro YSI Professional Plus (Pro Plus) Key Features: Measures ammonium (NH₄⁺) directly in freshwater samples. Replaceable sensor design minimizes instrument downtime. Rugged construction for demanding field applications. Fast response with excellent repeatability when properly calibrated. Integrates with YSI's Professional Series handheld meters for portable field analysis. Ideal for routine monitoring and process control.