Academy Conical Flask Narrow Neck 500ml 
Conical/Erlenmeyer, Narrow Neck with Graduations. New, affordable, high quality range of Conical Flasks made from durable 3.3. Borosilicate glass. Superior chemical and heat resistance. Complies to I.S.O 1773 Standard. 500ml Inner Neck Diameter 34mm. 33mm (bottom) rubber stoppers will fit this product. See Product numbers 1165, 1476 and 1495.