Method and apparatus for extraction of solvent extracts

Abstract

Abstract APPARATUS AND METHOD FOR THE EXTRACTION OF SOLVENT EXTRACTS ARE DISCLOSED. FIRST, A PLURALITY OF TEST TUBES MOUNTED ON A MOVABLE RACK ARE FILLED SEQUENTIALLY WITH A PRESPECIFIED VOLUME OF LIQUID SAMPLE FROM A TWO-STAGE SAMPLE DISPENSER. ONE STAGE OF THE DISPENSER DISPENSE A SAMPLE WHILE THE OTHER STAGE AUTOMATICALLY AND CONCURRENTLY IS CLEANED; THEN THE STAGES ARE REVERSED FOR THE NEXT SPECIMEN AND THE RACK IS MOVED ON INCREMENTAL DISTANCE TO PLACE AN EMPTY TEST TUBE UNDER THE CLEANED DISPENSER. A PRESPECIFIED VOLUME OF EXTRACTING SOLVENT IS THEN ADDED TO EACH SAMPLE BY A SECOND DISPENSER AND THE TUBES ARE SEALED BY A MULTI-STOPPER APPARATUS. AFTER AGITATION AND SETTLING, THE SOLVENT LAYERS IN EACH TEST TUBE ARE REMOVED SIMULTANEOUSLY BY A GANGED SUCTION APPARATUS. FOR FINAL REDUCTION AND EXTRACTION, THE RACK IS PLACED IN A GANGED MULTIPLE-ROTARY EVAPORATOR APPARATUS WHEREIN THE SAMPLE IS HEATED, ROTATED, AND EVAPORATED TO FORM A RESIDUE. IN ANOTHER EMBODIMENNT, WHEREIN SOLID SAMPLES OR DRYING AGENTS ARE UTILIZED, THE SAMPLE IS FILTERED PRIOR TO FINAL REDUCTION BY A GANGED MULTIFILTER APPARATUS.

Inventors

• 👤 I Bush

Bibliographic Details