title: A new safety system for air filtration in clinical suction apparatus.
abstract: The design and development of a low cost differential pressure indicator giving continual pressure comparison across the substance of an air filter is described. A hazard warning is given when the differential pressure rises above a pre-set value proportional to significant loss of filter efficiency. The differential pressure indicator affords increased protection against infection associated with the use of suction apparatus and allows a net saving in expenditure by ensuring optimum use of integral air filters.
mesh_terms: D003428:Cross Infection / Q000517:prevention & control; D005374:Filtration / Q000295:instrumentation*; D006801:Humans; D011312:Pressure; D012449:Safety