Arnold and Mabel Beckman with unidenified men at the Penn Chemicals B.V. plant in Cork, Ireland
- 1982
Dr. Arnold O. Beckman (1900-2004) invented the first commercially successful electric pH meter in 1934 and thus began a long career manufacturing scientific and medical instruments with National Technical Laboratories, Arnold O. Beckman, Inc., and Beckman Instruments. After his retirement he and his wife, Mabel, devoted their lives to philanthropy and specifically supporting scientific innovation.
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“Arnold and Mabel Beckman with Unidenified Men at the Penn Chemicals B.V. Plant in Cork, Ireland,” 1982. Beckman Historical Collection, Box 55, Folder 11. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/3b591863n.
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