Plastic frame filter unit for a stack assembly

摘要: A filter unit comprises a plastics frame into which sheet of medium is insert moulded. Portions the form apertures and other portions allow fluid access to from opposed surfaces when covered by flat surface. The frames also an integral capsule enclosing medium. number such units can be stacked together in various configurations so that inlets outlets for that, some configurations, passed through parallel while, succession. Filters any convenient size produced increasing stack. filters are bi-directional. polypropylene connected hydrophilic microporous nylon membrane injection moulding, has been found give integrity tested.