Oil & Gas Refining & Petrochemicals

Vaisala K PATENTS® Process Refractometers provide accurate in-line refractive index, concentration and density measurements that help to improve oil and gas refining and petrochemical operations such as multi-product custody transfer and loading/ unloading operations, sulfuric acid alkylation, amine gas treating, gas dehydration and lube oil production.

Refractometer applications

Explore all oil, gas refining, and petrochemical applications

Library of downloads and software

Here you will find product manuals, approvals and test certificates, material safety data sheets (MSDS) and software for connectivity and communications.

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.

Frequently asked questions

Here you will find answers to the most typical questions regarding the process refractometer.


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.