PRESSURE-ASSISTED ANALYTICAL APPARATUS AND METHOD

摘要

An apparatus and methods for assaying a test substance utilizing filter means (25) and superatmospheric pressure. The apparatus has a reaction chamber (11) with an open end (13), a porous filter (25) communicating with the open end (13), the filter (25) having pores sized to prevent passage therethrough of a complex of labeled antibody and analyte, the reaction chamber (11) being cylindrical and having a plunger (20) snugly received therein for providing superatmospheric pressure to the contents of the reaction chamber (11) during use.