Work pieces with a complex geometry such as blind holes and undercuts are generally cleaned using immersion procedures. In contrast to spray cleaning, which takes place mostly using watery cleaners, immersion cleaning is also carried out with solvents.

When the work piece is immersed in the cleaning bath, the adhering contaminants are removed primarily through the chemical cleaning effects of the medium employed. To increase the effect, the goods can be turned or slewed in the bath. Depending on the application, the cleaning action can also be supplemented through the use of ultrasound or injection flood washing.