Borosilicate Glass Filter Flask, 500mL, pk/6

These flat bottomed borosilicate filter flasks have tubulation for ease of connection to filter pumps. They are ISO certified, have heavy-duty wall and permanent graduations. NC-11904. Sold in a pack of six. Work with #3 tapered neoprene gasket (NC-13671) to securely hold a Buchner funnel.