TY - MANSCPT DB - Science History Institute DP - Science History Institute M2 - Courtesy of Science History Institute. Rights: In Copyright - Rights-holder(s) Unlocatable or Unidentifiable TI - Beckman Pocket pH Meter ID - 8336h193d DA - 1966/// YR - 1966 AV - Beckman Historical Collection, Box 55, Folder 113 VL - Beckman Historical Collection, Box 55, Folder 113 AN - Beckman Historical Collection, Box 55, Folder 113 UR - https://digital.sciencehistory.org/works/8336h193d AB - The Pocket pH meter allowed pH readings to be taken in the field, in a laboratory, or at any site, without needing to send samples back to a laboratory and a more stationary instrument. 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 instrument kicked off rapid development not only of Beckman Instruments, Inc. but also of the electronic scientific instrument industry. KW - Hydrogen-ion concentration--Measurement--Instruments KW - Scientific apparatus and instruments KW - Beckman Instruments, Inc. LA - ER -