These handy acrylic racks are specifically designed for procedures involving small, disposable plastic chromatographic columns. The two-piece rack set, comprised of the column rack and test tube rack, holds 20 columns eluting into 12 x 75mm test tubes. The double-decker rack suspends another 20 columns over those held in the column rack. This allows sequential separations before collecting the eluates. Each unit can be ordered separately or as part of a set.