pH meters
pH meter is a device used to measure pH. There are a lot of pH meter types: pocket, pen-like, with thermoresistors or thermocouples sensors, with automatic and non-automatic temperature compensation. Also you can find: Benchtop pH Meters. Oakton pH Testrs, ISFET Meter, Hand-held pH Meters. Waterproof an non-waterproof pH meters. First pH meter has been built in 1936. First portable pH meter has been built in 1970. The main idea of pH meter is measuring the activity of hydrogen ions. Main part of a pH meter is a glass electrode. It generates an electric potential and a voltmeter measures its value.
