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Test Tube Racks Test tube rack "13x31": Plastic, 31-place, for 10 to 12 mm test tubes. Three-tier design prevents tubes from sliding out the sides. These racks are polypropylene, which makes them:
Ship wt. 0.6 lb. #C1331... $11.99 each .............................................................................................................................. "13x18" (not shown). 13 mm holes, 18 places (3 rows of 6). For 10 to 12 mm tubes. No drying pegs. Polypropylene. Ship wt. 0.5 lb. #C1318 ... $7.49 each .............................................................................................................................. "15x18" 15 mm holes, 18 places (3 rows of 6). For 13-15 mm tubes (15's may fit snugly). No drying pegs. Polypropylene. #C1518....$7.49 each .............................................................................................................................. "18x12" ... 18 mm holes, 12 places (2 rows of 6). For 15-18 mm tubes (18's may fit snugly). No drying pegs. Polypropylene. #C1812....$7.49 each ............................................................................................................................... "20x20" (not shown) ... 20 mm holes, 20 places (2 rows of 10). Good for 18 mm test tubes. 20's may fit, snugly. No drying pegs. Polypropylene. Overall length ~ 13". Overall height ~ 5". Width ~ 2 3/4". Ship wt. 0.8 lb. #C2020...$12.49 each ![]() "25x12" .... 25+ mm holes, 12 places (2 rows of 6). Good for 25 mm test tubes. No pegs. Polypro. Ship wt. 0.8 lb. #C2512 ... $12.49 each
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