Patent ID: 7576037

Claim:
A synthesizer for combinatorial chemistry comprising: a plurality of synthesizer columns adapted to retain solid reaction supports within the columns during a series of reaction steps, each synthesizer column comprising a reagent fluid path selectively controlled by individual inlet and outlet reagent valves disposed on opposite ends of each column, and a mixing fluid path selectively controlled by individual first and second mixing valves disposed on opposite ends of each column; a common mixing chamber in fluid communication with each of the synthesizer columns when the mixing fluid path is established by flow through the first mixing valves of each synthesizer column, said first mixing valves disposed in-line between each synthesizer column and common mixing chamber; a pressure controllable fluid reservoir in fluid communication with the mixing fluid path and adapted to provide a motive force to the mixing fluid path to transport a stream of fluidized solid supports into the synthesizer columns for the series of reaction steps as well as out of the synthesizer columns and into a common mixing chamber between reaction steps.