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Genre Manuscripts Remove constraint Genre: Manuscripts Genre Drawings Remove constraint Genre: Drawings Subject Beckman Instruments, inc. Remove constraint Subject: Beckman Instruments, inc.

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    • 1956

    Although the author is unknown, these instructions were most likely written by a Beckman Instruments employee. This glass electrode was used in Beckman pH meters.

    Arnold Beckman invented his first pH meter in 1934 at…