To meet the cleanliness requirements placed on precision components in modern production, it is necessary to perform cleaning tests with prototypes, sample parts and pilot series before actual series production can be started. The results often highlight optimization potential for parts design. For those tests, part-specific trays, like those used for cleaning of complex workpieces produced in small batches, are required. The flexible MEFO-VARIO workpiece holder system allows you to assemble these part-specific compartment, pin or loop trays quickly with just a few standard components and without the need for tools. MEFO-VARIO is used in combination with our MEFO-BOX.