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This mailer, sent to Beckman shareholders, was a reprint from a company publication and explained the significance of the pH meter.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from…
This glass electrode was first used in Beckman pH meters and later other instruments.
Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California citrus industry, who needed an…
This job schedule is a snapshot of the work being done by NTL in January, 1934. This work included the important pH meter development for the California Fruit Growers Exchange, of course, but also a project for Lee de…