The DR Spectrophotometer was a basic model DU (an ultraviolet, single beam, quartz-crystal spectrophotometer) with an added recorder. This one-sheet description of the instrument was used in several Beckman Instruments bulletins, which were marketing documents and pamphlets sent to prospective buyers.
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|View in library catalog|
Beckman Instruments. “The Beckman Model DR Recording Spectrophotometer,” December 5, 1945. Beckman Historical Collection, Box 18, Folder 9. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/rx913p89r.
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