YSI, a Xylem brand
YSI provides monitoring equipment and services to governments, universities, and private organizations whose goal is to make the best use of natural resources. Products include: Multiparameter sondes for unattended monitoring and profiling of water quality; Multiparameter instruments for sampling water quality; Acoustic Doppler meters for measurements of velocity, tides, and currents; Buoys with full array of monitoring instrumentation, data acquisition systems, and meteorological sensors. Our trusted solutions help water resources professionals - throughout the aquaculture, coastal/estuaries, drinking water, ground water, storm water, and surface water industries - obtain the quality data needed to make informed decisions about critical projects.


1725 Brannum Lane
Yellow Springs, OH 45387
United States
Phone: 937-767-7241
Fax: 937-767-9353

Product Categories

Instrumentation, BOD; Instrumentation, Dissolved Oxygen; Instrumentation, Water Quality Monitoring; Multiparameter Sensors; Sensors, Dissolved Oxygen


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