Bel-Art F18750-0003 Poxygrid Test Tube Rack; 10-13mm, 72 Places, 8&sup1;&frasl; x 4&frasl; x 2&sup1;&frasl; in., Orange Unaffected by organic solvents, salts, weak acids and weak alkalis Square holes, three decks, a slotted grid bottom and reinforced edges Withstands a temperature range of -223C (-369F) to 121C (250F); can be autoclaved Overall measurements: 20.5 x 11.3 x 6.4cm (8-1/16 x 4-7/16 x 2-1/2") Orange; can be used for biohazard warning; holds 72 tubes from 10 to 13mm