Customer Support

Xylem's analytical instruments are used in numerous applications worldwide. Browse our Customer Support Hub to get the most out of our products. Gain insight and learn best practices from our technical support, service, and application engineering team with the options below.

ysi customer support brands

consult our water experts

Our laboratory experts are available to help with everything from instrument selection to application support for various applications.

Learn More

Our technology experts are available to help with everything from instrument selection to data management.

Learn More

Our municipal experts are available to help with everything from instrument selection to application support for wastewater and drinking water treatment.

Learn More

Technical Support

YSI, a Xylem brand
8 am - 5 pm ET
+1 (937) 688-4255
info@ysi.com

SonTek, a Xylem brand
+1 858-546-8327
inquiry@sontek.com

OI Analytical, a Xylem brand
+1 979-690-1711
oi-info@xylem.com

Global Water Instruments, a Xylem brand
+1 979-690-1711
tech.support@xylem.com

Bellingham + Stanley, a Xylem brand
+1 678-804-5730
service.bs.us@xylem.com

Quick Links

For a limited time, we’re offering discounted pricing on maintenance for EXO Sondes and ProDSS Handheld Meters. Check out our Winter Maintenance Special.