- Bulletin 170
- Circa 1950
Promotional, color pamphlet for the Model H 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…
- Circa 1940
The brochure touts the benefits of a device which automatically dispenses a pH-controlled chlorine germicide rinse. Soda fountains, bars, and lunch counters are the target market.
- Creator Of Work Beckman Instruments, inc.
- Subject Infection--Prevention, Hydrogen-ion concentration--Measurement--Instruments, Scientific apparatus and instruments, Chlorine, Sterilization, Disinfection and disinfectants, Beckman Instruments, inc., Restaurants--Sanitation, Hydrogen-ion concentration
- Beckman Reprint R-38
Beckman Instruments reprinted and distributed this paper, originally published in Analytical Chemistry Vol. 22, No. 6, June 1950.