Closed evaporator system for preparing samples for analysis

A closed positive pressure evaporation system for evaporating samples in a plurality of sample vials in preparation for analysis where each sample is in a separate sample vial of said plurality of sample vials, each said sample vial having an inlet means and an outlet means, said closed positive pressure evaporation system comprising:

• a heat source:
• a holder for positioning and holding said plurality of sample vials with reference to said heat source;
• a chamber fully enclosing said a heat source and said holder for maintaining a constant temperature profile within said chamber when said samples within said plurality of sample vials being held by said holder are being heated by said heat source;
• a distribution manifold connected via tubing to said inlet means of each sample vial of said plurality of sample vials, within said chamber being held in said holder, for distributing purified inert gas to each said sample vial;
• a collection manifold connected via tubing to said outlet means of each of said sample vials, within said chamber and held in said holder, for collecting said purified inert gas and gases from each said sample vial connected to said distribution manifold;
• each said sample vial of said plurality of sample vials comprising a sample vial connecting means for connecting said inlet means to said outlet means of said sample vial when said sample vial is not attached to said distribution manifold and said collection manifold for preventing contamination of said sample in said sample vial and for connecting said sample vial to said distribution manifold and said collection manifold.