Simultaneous multiple chemical synthesizer

A simultaneous multiple chemical synthesizer, comprising:

• a plurality of reaction vessels wherein each vessel has a filter in the bottom portion thereof, whereon a solid-phase resin support is packed;
• a plurality of needles, wherein each needle is connected to an aspirating line for injection of a reaction mixture into a respective reaction vessel, and to a gas supply line for each reaction vessel, and wherein each needle does not touch said resin when inserted in the respective reaction vessel;
• one or more arms which are horizontally and vertically movable and hold said plurality of needles;
• means for moving said one or more arms in a horizontal and vertical direction;
• a bubbling gas line and a waste discharge line in connection with a respective reaction vessel, wherein each of said lines is connected to the bottom portion of its respective reaction vessel;
• a plurality of purging means which move horizontally and vertically into said respective reaction vessels synchronously with the opening of said waste discharge lanes;
• means for moving said purging means;
• and
• means for washing a portion of said needles and said purging means which come in contact with the reaction mixtures received in said reaction vessels.