Abstract: A device capable of synthesizing a plurality of selected peptides by automatically mixing various amino acids, solvents, and activators and adding these to resins contained in a plurality of individual reaction vessels. A plurality of amino acids are contained in vessels within a carousel which is rotated into position where a syringe is inserted into a selected vessel to transport the amino acid within to a pre-reaction vessel for mixing with other selected amino acids which were previously drawn from the carousel. The mixture of amino acids is then transported to a reaction vessel containing the resin balls for growth of the selected peptide. The device includes a computer, controllable valves, at least one pump, pressurized gas such as nitrogen for transporting fluids, various vessels containing amino acids, solvents, activators, resins, and tubing connecting these elements. The computer is programmable to sample, mix selected components, and apply the mixture to resins for growing peptides.

Abstract: A device capable of synthesizing a plurality of selected peptides by automatically mixing various amino acids, solvents, and activators and adding these to resins contained in a plurality of individual reaction vessels. A plurality of amino acids are contained in vessels within a carousel which is rotated into position where a needle is inserted into a selected vessel to transport the amino acid to a pre-reaction vessel for mixing with other selected amino acids which were previously drawn from the carousel. The mixture of amino acids is then transported to a reaction vessel containing the resin balls for growth of the selected peptide. A computer controls valves and pumps and is programmed to mix selected elements, apply the mixture to resins and grow peptides. A preferred method reduces cycle time and saves solvent by using the activator delivery step to simultaneously clean the needle of amino acid residue.