Abstract: A size-classifier (12) for dividing adipocyte cells into specific size fractions is provided inclusive of a carousel (14) rotatably mounted in a classifier vessel (12v) to rotate about a classifier axis (Z12). The carousel (24) is divided into compartments (14.1-14.n) separated by compartment walls, each having a transverse wall portion which is transverse to a radial direction of the carousel wall (14w). The transverse wall portion separating an ith compartment (14.i) from a (i+1)th compartment (14.(i+1)), with i=1 to (n?1), includes a mesh of ith opening (Ri), smaller than an (i?1)th opening (R(i?1)) of a transverse wall portion separating a (i?1)th compartment (14.(i?1)) from the ith compartment (14.i), (i.e., R(n?1)<R(n?2) . . . <Ri< . . . <R1). A liposuction kit-of-parts and assembly for liposuction and treatment of the liposuction aspirate as to size classification is also provided.