A GREAT ALTERNATIVE TO WIRE RACKS WITH PRICE AND SPACE SAVING ADVANTAGES OVER OTHER PLASTIC RACKS. MADE OF A SPECIAL BLEND OF AUTOCLAVABLE POLYPROPYLENE THEY WILL SINK IN A WATER BATH AND MAINTAIN THEIR STABILITY EVEN IN AGITATED WATER. ALSO PERFECT FOR USE OUTSIDE THE WATER BATH THEY MEET THE DEMANDS OF DAILY USAGE IN THE LAB. AVAILABLE IN NUMEROUS HOLE SIZES WITH A CHOICE OF THREE COLORS FOR SAFETY AND IDENTIFICATION. EACH RACK FEATURES END PLATES FOR LABELING AS WELL AS NUMBERED AND LETTERED ROWS FOR TUBE IDENTIFICATION. INTERLOCKING FEET ALLOW STACKING OF RACKS FOR STORAGE. DIMENSIONS FOR ALL RACKS ARE 24.6 X 10.4 X 6.4CM HIGH (9.7 X 4.1 X 2.5"") AND THEY ASSEMBLE IN SECONDS. STEAM AUTOCLAVABLE AT 121 degreesC (250 degreesF).