Advertisement for the Microspec Infrared Spectrophotometer, made by Beckman Instruments.
The Beckman Instruments IR spectrophotometers began as a request from the Office of Rubber Reserve to Arnold O. Beckman in 1942, asking for an infrared spectrophotometer that they could use to create rubber. Under this contract, Beckman Instruments developed a single-beam spectrophotometer based on Robert Battrain’s extant design, which in 1942 was sold as the IR-1. With the IR-4 in 1956, Beckman Instruments branched out into double-beam design and kicked off a golden age of IR spectrophotometer production that lasted until 1973.
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Hixson and Jorgensen, and Beckman Instruments. “Since When Did Infrared Spectrophotometery Become a Popular Campus Subject?,” 1967. Beckman Historical Collection, Box 49, Folder 25. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/f4752g745.
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