Vaisala K PATENTS® Process Refractometers provide accurate and reliable liquid concentration and density measurements of almost any chemicals or compounds in the main processing lines, by-pass lines or vessels even in the most demanding, hazardous environments.

What is process refractometer

Vaisala K-PATENTS® Process Refractometers are used for in-line liquid concentration measurements enabling advanced and accurate process control supporting industrial automation.

Learn more about the principle, technology, and measurement behind a refractometer; refractive index.


Vaisala and our authorized Liquid measurements distributors offer comprehensive customer care covering the entire lifecycle of Vaisala K‑PATENTS refractometers, and provide application support. See our refractometer service offering from this page.