<p>Provided is an apparatus for automated separation of a target compound from a sample using magnetic particles, which apparatus comprises a pipette head assembly for dispensing liquid through one or more pipette tips attachable thereto to one or more vials and a magnetic rod which is movable within the apparatus to a position adjacent to the one or more vials for attracting the magnetic particles; wherein the pipette head assembly has a pipette tip ejector for ejecting the one or more pipette tips from the pipette head assembly; and wherein the pipette tip ejector is operable by the magnetic rod.
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