Advertisement showing a woman using a Beckman Model 76 Expanded Scale pH Meter.
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.
|Creator of work|
|Original file type||TIFF|
|View in library catalog|
Erwin Wasey, Ruthrauff, and Beckman Instruments. “Read PH to 0.003...,” 1961. Beckman Historical Collection, Box 49, Folder 19. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/12579s25t.
This citation is automatically generated and may contain errors.
Download selected image
Previous image shift + or , Next image shift + or . Pan image Zoom in + or shift + Zoom out - or shift + Zoom to fit 0 Close viewer esc Also
Mouse click to zoom in; shift-click to zoom out. Drag to pan. Pinch to zoom on touch.