Do you clean with dirty water? Extran Ultrafiltration helps our customers improve parts washing and reduce the volume of their wastewater. Today’s precise manufacturing specifications require very clean parts.  However, environmental and health concerns restrict the use of harsh solvents for cleaning.  Manufacturers are also challenged with using aqueous cleaning systems to meet these tight standards.  Therefore, it is difficult to achieve the goals without generating big wastewater volumes.   Also, manufacturers can end up throwing large amounts of cleaning chemicals down the drain.