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Private company

Dionex

Dionex Corporation is an American company based in Sunnyvale, California. It develops, manufactures, sells, and services analytical chromatography systems for separating, isolating, and identifying the components of chemical mixtures. Such equipment is used in pharmaceutical manufacturing, medical research, environmental monitoring, and food testing.2 It was founded in 1975.1 It employed 1,500 people.1 It is part of Thermo Fisher Scientific Inc.1 Wikipedia text CC BY-SA 4.0

Last updated Oct 21, 2026.

Overview

1975Founded1

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Dionex Corporation is an American company based in Sunnyvale, California. It develops, manufactures, sells, and services analytical chromatography systems for separating, isolating, and identifying the components of chemical mixtures. Such equipment is used in pharmaceutical manufacturing, medical research, environmental monitoring, and food testing.2

Corporate structure

Dionex is part of a group headed by Thermo Fisher Scientific Inc.. 1,172 entities, 39 countries on record. Switch between the flow chart and the network, and select any entity to see its details.

Built from parent and subsidiary links from GLEIF, the Global Legal Entity Identifier Foundation (CC0); subsidiaries listed in Exhibit 21 of annual reports filed with the SEC; subsidiaries, stakes and holdings from Wikidata (CC0). Each entity in the chart links to its source.

Products and brands

  • chromatography

Listed on Wikidata.1

Software

Dionex developed the Chromeleon brand of chromatography software. The primary function of Chromeleon is to control and obtain data from analytical instruments, such as GC, LC, IEX and MS. Chromeleon is fully Title 21 CFR Part 11 compliant. Chromeleon 7.3 is the latest edition of the software.

Hardware

The technology made by Dionex includes the Rapid Separation LC (RSLC) and polymeric HPLC columns, a type of monolithic HPLC column. Unlike the inorganic silica columns, the polymer monoliths are made of an organic polymer base. Dionex, traditionally known for its ion chromatography capabilities, has led this side of the field. Dionex first acquired a license for the polymeric monolith technology in the 1990s. Dionex also acquired ESA Biosciences' HPLC assets in 2009, expanding its expertise in this area.

From Wikipedia’s article on Dionex, shared under CC BY-SA 4.0.3

Subsidiaries and ownership

Parent company

From Wikidata.1

Timeline

  1. 1975Founded Founded1

Sources

The numbers on this page point here. Each one links to the record it came from.

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