Micro analyses:

Controlled potential coulometry is more popular than electrogravimetry because it prevents the last step of weighing the product. The tedious steps of dryings and weighing the electrode after every electrolysis can be prevented. This is very meaningful when the final product is not a solid. The technique is specially meaningful for the determination of small quantity of the analyte / 0.01-1.0 mg along with an accuracy of ± 0.5%.