Porous hydrophobic membrane and method of using same

Abstract From the Canadian patent

A system and method of immunoassay both including, the use of a reaction capsule having a hydrophobic membrane which may be repeatedly wetted and rendered hydrophobic. A pressure differential across the membrane causes liquid flow therethrough to be initated and the hydrophobic state is then achieved by flowing gas through the membrane. The system includes a turntable supporting a plurality of reaction capsules and eccentric means for agitating the turntable and capsules. The turntable is rotated to position the capsules at various processing stations, including sample introduction reagent intro-, duction, wash, substrate introduction and read stations. A single cylinder two-inlet valve may …