Patent ID: 6422098
Filing Date: 2002-07-23
Classification: G01N

Abstract:
A dissolution sampling aparatus comprising:a bath containing a liquid; at least one flask partly submerged in said liquid of said bath, said flask is to contain a media within which is deposited a drug in pill form; extraction means capable of simultaneously removing a series of aliquots from said media; valve means located between said flask and said extraction means, said valve means being operable to permit extraction of each said aliquot and depositing of each said aliquot in a deposit location; and valve means comprising a valve housing which has a first port and a second port and a third port, a diaphragm mounted within said valve housing, said diaphragm, when at rest, being positioned to close said first port and said second port and said third port, during said extraction of said aliquot said diaphragm being moved so said first port is open and connecting with said second port with said third port is closed by said diaphragm, during depositing of said aliquot said first port being closed by said diaphragm and said diaphragm being moved so said second port will be open connecting with said third port.