TY - PCOMM DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: In Copyright, D TI - Memo from Walter Donner to Beckman Instruments staff ID - 2801pg32c AU - Donner, Walter DA - 1956/10/10/ YR - 1956 AV - Beckman Historical Collection, Box 18, Folder 26 VL - Beckman Historical Collection, Box 18, Folder 26 AN - Beckman Historical Collection, Box 18, Folder 26 UR - https://digital.sciencehistory.org/works/2801pg32c AB - Memo describes an meeting in which Beckman Instruments staff discussed making changes to the Model G pH meter in order to reduce cost. Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an accurate way to measure the acidity of his product. The resulting “acidimeter” with its glass electrode was renamed the Model G pH meter in 1937 and produced on a larger scale by Beckman’s company, National Technical Laboratories. This instrument kicked off the rapid development not only of NTL and Beckman Instruments, but also of the electronic scientific instrument industry. KW - Hydrogen-ion concentration--Measurement--Instruments KW - Scientific apparatus and instruments KW - Beckman Instruments, Inc. LA - English ER -