The Bel-Art Scienceware 147510000 thistle tube funnel has a wide top and thin stem for filling burettes, flasks, and small containers. It is constructed of polypropylene so that it is chemical-resistant and shatter-proof. The inside diameter of this funnel is 27mm (1-1/16"), the outside diameter top flare is 41mm (1-5/8"), the stem diameter is 6.4mm (1/4"), and the stem length is 254mm (10"). This item can be sterilized with an autoclave at temperatures up to 121 °C (250 °F). It comes in a pack of 12 funnels.
Bel-Art Products manufactures scientific products, including labware, testing equipment, and safety supplies, under the Bel-Art and Scienceware brands. The company, founded in 1946, is headquartered in Wayne, NJ.