The present invention relates to the regeneration of adsorbent matrices that are used for the purification of substances from aqueous liquid samples derived from biological material. The method can include controlling multiple steps of the robot. The body back carries an upstanding \u201cU\u201d shaped handle for manually lifting the body for tool placement and release. The operative surface may be sloped so that rainwater in excess of the capacity of the internal cavity is directed along the slope to a predetermined location. The present invention particularly relates to the soybean variety BY1212223 and its progeny, and methods of making BY1212223.