has_specified_input has_specified_output achieves_planned_objective material entity material processing material transformation objective washing OBI-Branch Philippe Rocca-Serra PMID: 6874122. Dialysis leucopenia--no correction after prolonged washing of the membrane. Int J Artif Organs. 1983 May;6(3):113-4. washing washing is a process by which a material entity acting as contaminant (e.g. excess staining reagent) is removed by application of one or more cycles of solution in flow. metadata complete