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These round floating bubble racks can incubate 8 to 20 tubes in a beaker of water. The racks are loaded from the top and the tubes are easily removed by pressing the rack down on a bench until the short legs touch. Perfect for use in microbiology and immunology labs. Molded from buoyant foam-filled TPXR (polymethylpentene) with tiny bubbles throughout. 10.8 mm diameter holes fit the 1.5 ml microtubes, and 7.7 mm holes fit the 0.5 ml tube. The racks are 1/4"(6.4 mm) thick with 3/4" (19 mm) long legs and a center rod handle. They are steam autoclavable at 250 degree F (121 degree C). Use in 1000ml beakers. 10.8mm diameter holes fit the 1.5ml microtubes. Hole: 10.8 mm O.D.: 105 mm Use: 1000 mL beaker
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