PYREX 20x150 mm Disposable Rimless Culture Tubes, Bulk Pack Case of 500

These single-use 20x150mm PYREX disposable round bottom culture tubes are packaged for your convenience in easy-to-open, easy-to-use bulk packs. They hold approximately 36 mL and are made of borosilicate glass to reduce pH changes and contaminants potentially leached from soda-lime glass.