Universal tray Mini accommodates a maximum 23×10, 15×25, 15×50, 15×100, 6×250, 4×500, 3×1000 or 1×2000 ml flasks or 1 test tube rack.

Universal tray KM accommodates a maximum 58×10, 29×25, 27×50, 24×100, 12×250, 8×500, 5×1000 or 2×2000 ml flasks or 3 test tube racks. The tray holds 4×100 or 3×250 ml separating funnels.