Roll Over Image to Zoom ‹ Back to Collection

Horiba Model MEXA-200 Infrared CO Analyzer

  • ca. 1970
  • Manufactured by Horiba, Ltd.
    Made in Kyoto
  • 8.5 in. H x 8 in. W x 13 in. D
    Metal, plastic
  • On display in Making Modernity
  • Gift of Horiba Ltd.
  • 2007.028.002


This infrared carbon dioxide analyzer was developed to measure the CO% contained in vehicle exhaust. Horiba Ltd. is one of the most successful companies to make analyzers specializing in air-pollution and vehicle-exhaust monitoring. Their instruments are used in Japan, the United States, and around the world. This bench-top model would include a sample probe to be placed in the exhaust tailpipe of the vehicle.

Search Our Online Collections

Arnold O. Beckman

CHF’s Beckman Center for the History of Chemistry was started with a generous grant from the Arnold and Mabel Beckman Foundation in 1987.


Sensing Change

See your environment with fresh eyes through this online exhibit.


Distillations Podcast logo
Listen to the latest episodes of CHF’s award-winning podcast.

Historically Grounded Perspectives

The Center for Contemporary History and Policy explores issues ranging from energy to medicine on CHF's blog, Periodic Tabloid.

Support CHF

Help us preserve and share the history of chemistry and related sciences. Make a tax-deductible tax-deductible gift online.

Meet the Othmers