About REX

REX  About us

Founded in 1940, "REX" (formerly known as "REX") played a pivotal role in China’s analytical instrument industry. It designed China’s first pH meter and glass pH electrode. Over the past 80 years, our mission has been to enhance people’s quality of life by delivering high-tech analytical instruments and top-quality services. We remain committed to hard work, innovation, and preserving our legacy. As a leading brand in scientific instruments, REX not only dominates the Chinese market but also extends its reach globally."


REX  80 Years History

INESA Scientific Instrument Co., Ltd., one of the largest scientific instrument groups in China, boasts the renowned brand REX, which has a rich history of over 80 years in the field of analytical instruments.”


REX  Innovative Development

REX is a high-tech enterprise that integrates research and development, production, sales, application, and service. It serves as the largest domestic base for developing and producing electrochemical water quality analysis instruments and electrochemical sensors. REX actively contributes to the formulation of major national and industry standards related to electrochemical analysis instruments and sensors in China.


Our product categories include pH/ISE/EC/DO meters, titrators, Karl Fischer titrators, water quality analyzers, online monitoring systems, and electrochemical sensors with related reagents. REX’s top-of-the-line electrochemical analysis instruments and titrator products have a strong presence in the local market.


Additionally, REX holds the distinction of being among the first batch of high-tech enterprises in Shanghai. As a national-level small giant enterprise, we are known for our specialization, refinement, unique features, and innovation. REX stands as a highly influential domestic manufacturer in the scientific instrument industry and ranks among the top 10 after-sales service providers in the Chinese scientific instrument sector.