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  • Water Quality Monitoring

    Handheld water quality digital
    samplers for multiple parameters

    View Product Solutions

  • YSI Environmental Monitoring

    EXO Platform, a smart and
    field-ready water monitoring system

    View EXO Products

  • YSI Autonomous Monitoring

    AUV & ASV designed for water quality,
    water currents, and bathymetry

    View Product Solutions

  • YSI Systems Integration

    Vertical water quality profilers,
    field design and installation

    View Product Solutions

  • YSI Lab & Life Sciences

    Biochemistry Analyzers
    & Benchtop Instruments

    View Product Solutions

Looking for the best instrument?


Finding the right handheld water quality meter should be easy. Just take our short quiz and the intuitive product selector will provide you with an immediate recommendation! 

Choose the Right Handheld

New optical dissolved oxygen meter

YSI-ProSolo-Handheld.jpgThe ProSolo incorporates smart sensor technology that enables sensors to be automatically recognized by the handheld. Additionally, DIGITAL sensors store calibration data, so probe assemblies can be swapped between handhelds without the need for re-calibration.

Learn More about ProSolo

New digital water quality meter

water-quality-meter-ysi-proswap-sampling-handheld.jpgThe ProSwap can transform into whatever you need: a purpose-built turbidity meter or a high-accuracy optical DO meter; a spot sampling pH meter or a profiling conductivity-temperature-depth system. Even beach monitoring for harmful algal blooms is possible with ProSwap!

Learn more about ProSwap

Download the new titration handbook


Looking to perfect your titrations? Explore Xylem’s Titration Handbook: an all-encompassing guide to help any laboratory navigate one of the oldest quantitative methods in chemical analysis.

Download the handbook

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