For over 60 years, Thornton has been the global leader in the reliable and accurate measurement of the key parameters for Ultrapure Water for Semiconductor. Thornton technology leadership is based on an intimate knowledge of critical ultrapure water (UPW) measurement technology and extensive application expertise. Our innovative multi-parameter instruments and sensors are specified to monitor UPW systems in most global semiconductor manufacturing facilities worldwide.

As part of the Mettler-Toledo Process Analytics Group, Thornton has developed world-class technology for resistivity/conductivity, silica, sodium, TOC, pH, ORP, dissolved oxygen and dissolved ozone measurement. We continue to provide innovative solutions, with expanded measurement capabilities, to meet the demanding requirements of the global semiconductor industry.