Before they are introduced on the market, dishwashers are loaded with dirty place settings and put to the test in order to see how they perform in comparison to a reference dishwasher. This includes standardised pre-drying and drying of the dirty dishes in an air circulation heating oven since, in everyday life, the dishes are not usually washed in the dishwasher immediately after they are placed.
This caused the custom made dishwasher to enter the market. DIN EN 50242/DIN EN 60436 defines measurement procedures for electric dishwasher performance, citing the customized Memmert UF750DW as an example of an air-circulation heating oven which is compliant with the specifications of the standard.
