Titration is an analytical technique that allows the quantitative determination of a specific substance (analyte) dissolved in a sample. This technique is based on a complete chemical reaction between the analyte and a reagent (titrant) of known concentration, added to the sample. Several kinds of analyses can be done with the titration:

Volumetric: Potentiometric, Amperometric, Photometric, conductometric, Turbidimetric or by Coulometric: Voltametric

For electroplating solution, to keep a good plating quality it is necessary to analyze concentration by titration of all components inside the bathes. Eg: metallic ions, acidity, electrolyte support.