YSI's trusted solutions help water resource professionals attain the data needed to make informed decisions about their critical projects. By providing reliable and accurate data, YSI works with customers worldwide to "mind the planet" by protecting natural resources such as watersheds. YSI's water quality and quantity products are backed by knowledgeable and committed customer service and technical support/applications experts. In business since 1948, YSI is an employee-owned company.
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