Ysi INC

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Their homepage, crawled AUG 2, 2026

At a glance

EmployeesNot reported

In business since1700

Industry

Instruments and Related Products Manufacturing for Measuring, Displaying, and Controlling Industrial Process Variables

HeadquartersYellow Springs, OH

SAM.gov UEIEAL5AXH5UMN3

Brands

Training, Events, Webinars

This company sells these brands.

YSI manufactures water quality sampling and monitoring meters and instruments that measure dissolved oxygen, pH, and turbidity. The company produces a range of equipment including multiparameter sondes, auto samplers, colorimeters, photometers, gas chromatography equipment, and total organic carbon analyzers. YSI serves industries including aquaculture, wastewater treatment, drinking water processing, food and beverage, and environmental monitoring.

Facility	City	State	Employees	Status
Ysi INC	Yellow Springs	OH	—	● ACTIVE

Compiled from federal records — EPA, OSHA, SAM.gov and the U.S. Census — and from the company’s own website. Federal source data is public domain. Each plant’s page names the source of every field.