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…

Advertisement about using various models of Beckman pH meters for monitoring water quality in industrial settings.

Arnold Beckman invented his first pH meter in 1934 at the request of a chemist from the California…

This advertisement describes a use case for Beckman pH meters in which Macon Water Works used the instruments to control the acidity of the water and inhibit corrosion of pipes.

Arnold Beckman invented his first pH…