Bel-Art H18914-0000 Full-View Test Tube Support; 22-25mm, 30 Places, Polypropylene A versatile polypropylene rack with pins for support or draining Tubes can be stored upright, full or empty, or inverted over pins for draining The rack with 102 pins, 5 x 16 rows is excellent for drying and storing glass plates used with vertical electrophoresis apparatus Steam autoclavable at 121 degree C (250 degree F) Compact footprint stores more tubes, wastes less space