Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Red 1000ml filter flask the tubes have round bottoms

the tubes have round bottoms and consistent wall thicknesses for centrifugation at up to 50

molded graduations and leak resistant closures

beaded rims for strength and resistance to chipping

and low expansion 3

Cap, Universal, Fits most 12mm, 13mm and 16mm tubes, Red 1000ml filter flask the tubes have round bottomsGuard samples against cross contamination and laboratory work areas against infection and spillage with these universal snap caps. Precision molded from low density polyethylene and designed to fit firmly on the tube. Closures are very sturdy under most rigorous procedures, including centrifugation. These polyethylene (PE) universal caps are designed for easy on and easy off use. Cap removal is simple and quick. Universal caps are ideal for recapping