Ph-meter

A pH meter is an electrochemical instrument that measures the hydrogen ion activity of a solution and reports it as a pH value, usually through a glass electrode paired with a reference electrode. New, used and refurbished units are listed across the Questpair catalogue, drawn from 751 listings offered by 18 verified suppliers and distributors in 10 countries. Of those, 88 percent are used, the remainder new. The instruments span laboratory benchtop models, handheld field units and bare electrodes, with prices that run from EUR 1 to EUR 34.436. Potentiometry of this kind underpins routine quality control, water analysis and buffer preparation in almost every laboratory discipline.