All hBAR glass funnels are made from high quality Borosilicate 3.3 glass for incredible durability that will withstand multiple uses. Our wide variety of Buchner funnels, dropping funnels, powder funnels, filter funnels, separating funnels, and thistle funnels are useful for chemistry, biology, and general science laboratories in addition to a variety of uses at home, in professional kitchens and micro-breweries, for essential oil distillation, and more.