Patent ID: 6820463
Filing Date: 2004-11-23
Classification: A61M,B65D,G01N

Abstract:
Testing apparatus (1) for testing a container (2) containing a suspension or solution of a substance (3), in particular, but not solely, a pharmaceutical substance, in a propellant (4) under pressure, said container comprising a body (5) which defines a chamber, a valve stem (6) which extends from a head of the body and a metering chamber (7) which is selectively communicable by the valve stem (6) with the atmosphere and the chamber (7); the valve stem providing, via an L-shaped conduit which extends between the free end and the side wall thereof, the outlet of the container (2) through which metered doses of the substance are released from said container (2), said testing apparatus (1) characterised in that it comprises: a gallery (8) for communicating, in use, in a fluid-tight manner with said valve stem; actuating means, in use, actuating said valve stem so as to discharge a metered dose of substance (3) and/or propellant (4) into said gallery (8), repeatably if necessary, until the pressure within the gallery (8) is substantially equalised with the pressure within the container (2); pressure measuring means (9) in communication, in use, with said gallery (8) and providing a measurement of the pressure therein.