• instantly creates more working space • helps reduce potential cross contamination • stops opened microfuge lids from interfering with other wells • stackable, with alphanumeric well identifications • will fit into standard 2” (53 mm) freezer racking • temperature range -80 to 121º C • clear lid locks the rack together for safe handling and transportation • wells have a center depression to stabilize conical tubes and a cryogenic vial lock for one handed cap removal • holds 64 x 1.5/2.0 mL cryo and/or micro tubes • autoclavable