This instrument, also known as an atmosphere analyzer, became one of Beckman Instruments' products when the company acquired Liston-Becker in 1955. It detects pollutants in the exhaust from vehicles with combustion engines.
Beckman Instruments, Inc. became interested in measuring, controlling, and fighting air pollution in the late 1940s and early 1950s, when company president Arnold O. Beckman became the scientific adviser to the Los Angeles Chamber of Commerce’s Air Pollution Control Officer. Many of the instruments that were developed by Beckman Instruments in the 1940s and 1950s as standalone items became incorporated into or re-purposed as smog-fighting systems.
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Dietrich, T. A. “Jean Schirmer, Pat Conners, and Max Liston with Early Vehicle Emissions Analyzer,” 1950. Beckman Historical Collection, Box 80. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/kh04dp82v.
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