Academy Filter Flasks 1000ml 
New, affordable, high quality range of Filter Flasks made from durable Borosilicate glass. Superior chemical and heat resistance. Heavy walled with glass sidearm. Arm will fit tubing with a 10mm internal diameter (All flask sizes). 1000ml Inner Neck Diameter 34mm. 33mm (bottom) rubber stoppers will fit this product. See Product numbers 1165, 1476 and 1495.