Noun
English Wikipedia has an article on:pH meterWikipedia
A pH meter.
pH meter (plural pH meters)
(chemistry) A voltmeter that uses the potential at a glass electrode to determine the pH of the solution in which it is immersed
An elementary pH meter that can be used to monitor titration reactions * pH meter : A potentiometer with an electrode whose potential depends on the amount of H + ion present in the solution. Source: Internet
Because of this, no definite indicator may be appropriate and a pH meter is often used to monitor the reaction. Source: Internet
To implement this approach to calibration, the electrode is first immersed in a standard solution and the reading on a pH meter is adjusted to be equal to the standard buffer's value. Source: Internet
Jock has been trying to work with the PH and bacteria in milk these last few months; I was surprised (and pleased) the PH meter in their mobile lab was exactly like the one he has been using at Full Belly. Source: Internet