Product Service

Spanning nearly 75 years, YSI, a Xylem brand has a customer focused legacy of developing innovative, environmentally essential technology. Our customers are more than people who use our instruments - they are climate first responders, environmental stewards, and researchers who are passionate about our world along with scientific integrity.

Returning a Product for Service

When returning a product for service to any of the US YSI Offices, please complete the Product Return Form and send with your shipment. For product service outside of the US, please contact an authorized service center in your region.

*Please note: Be sure to return equipment for service in original packaging to avoid additional packaging charges. An additional charge may appear on the service quote to accommodate safe return shipping of your equipment.

Download Return Form

New Factory Service Plans

Affordable Service Plans are available for purchase with new EXO Sondes and ProDSS Meters!

Plans cover preventative maintenance and standard replacements parts. Optimize the performance and lifetime of your new instruments by adding a Factory Service Plan.

View EXO Plans

View ProDSS Plans

Shipping Lithium-Ion Batteries

Please do not ship damaged or potentially defective batteries to YSI or any of our authorized service centers unless instructed otherwise.

If you have any questions or concerns, please contact YSI Technical Support. Read the Shipping Lithium Ion Batteries Product Notice for additional information.

Shipping Lithium Ion Batteries Product Notice

SonTek manufactures affordable, reliable Acoustic Doppler Current Profiling (ADCP) instrumentation for water velocity measurement in oceans, rivers, lakes, harbors, estuaries, and laboratories. Our customers are scientists, engineers, hydrologists, research associates, water resource planners, and anyone that needs to collect velocity, flow, or discharge data in every kind of body of water imaginable.

Returning a Product

Our Technical Engineers are a click or phone call away. If you you need to return SonTek products please contact us.

SonTek Contact Support

Repairing a Product

Please contact SonTek, please be sure to include the serial number of your system. Call SonTek at +1.858.546.8327

SonTek Contact Support

Contact a Service Rep

Please contact SonTek, please be sure to include the serial number of your system. Call SonTek at +1.858.546.8327

SonTek Contact Support

OI Analytical (OIA) designs analytical instruments used by the world's top laboratories. We adapt EPA, ASTM, and other methods for our instruments so you can streamline incorporation into your quality system. From food to fuel, drinking water to wastewater, our instruments are used in all major sectors of the world's industries across the global water cycle.

Returning a Product

Contact OI Analytical
+1 979-690-1711
oi-info@xylem.com

Repairing a Product

Contact OI Analytical
+1 979-690-1711
oi-info@xylem.com

Contact a Service Rep

Contact OI Analytical
+1 979-690-1711
oi-info@xylem.com

Global Water, a Xylem brand instrumentation serves the water, wastewater, and environmental markets. We design and manufacture our products at the YSI facility in Ohio. One of our core competencies is to integrate products into systems to meet our customer's requirements.

Returning a Product

Contact Global Water Instruments
+1 979-690-1711
tech.support@xylem.com

Repairing a Product

Contact Global Water Instruments
+1 979-690-1711
tech.support@xylem.com

Contact a Service Rep

Contact Global Water Instruments
+1 979-690-1711
tech.support@xylem.com

Bellingham + Stanley is a world leader and manufacturer of high-quality laboratory equipment, such as digital refractometers and polarimeters for various industries around the globe, and has been selling into the United States market since the early 90s. Whether you are searching for instruments to help with Food & Beverage applications or pharmaceutical and petrochemical applications, we can help!.

Returning a Product

Contact Bellingham + Stanley
+1 678-804-5730
service.bs.us@xylem.com

Repairing a Product

Contact Bellingham + Stanley
+1 678-804-5730
service.bs.us@xylem.com

Contact a Service Rep

Contact Bellingham + Stanley
+1 678-804-5730
service.bs.us@xylem.com