This advertisement highlights uses for Models R, H, and M pH meters in the water and wastewater treatment industry.
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|
|Rights||No Copyright - United States|
|View in library catalog|
Beckman Instruments. “Important Facts About PH for Water & Sewage Operators,” 1950–1959. Beckman Historical Collection, Box 18, Folder 30. Science History Institute. Philadelphia. https://digital.sciencehistory.org/works/mk61rh49w.
This citation is automatically generated and may contain errors.
RightsIn the United States
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.