Provided is a pharmaceutical or dietetic product, which serves for reducing andor blocking the adhesion of pathogenic substances and organisms to eucaryontic cells, in particular mammal cells. The apparatus and methods provide for the control of fluid flow in and between components in a microfluidic system to cause the removal of unwanted liquids and particulates or mixing of liquids. A filter hierarchy is an in-memory tree of string segments where each node corresponds to a string segment and references zero or more filters. The steam generator supplies steam to the inside of the case. Handles for a reusable bag are extended over arms on the bag rack and below the posts on the fixtures to keep the reusable bag open during filling. Rules with a quality metric below a threshold may be removed.