Abstract: The present disclosure provides novel apparatuses, systems, and methods for purifying dry embryo explants from a preparation of dry plant embryo explants for use in methods of genetic modification. The methods provided by the present disclosure may include one or more steps of sanitizing, drying, milling, coarse width sizing, length sizing aspiration, width and thickness separation, aspiration-classification, or separation using a friction table. The present disclosure further provides a population of purified embryo explants produced using the disclosed apparatuses, systems, and methods.