PYREX 60° Angle Fluted Laboratory Funnel - Short Stem Borosilicate Glass Funnel (75mL, 2/Pack) - Premium Reusable Chemistry Funnel for Labs, Science Classrooms & Home Experiments - Ideal for Liquid Transfer, Filtration & Chemical Mixing

The unique chemically stable, heat-resistant, low-expansion borosilicate formula of PYREX glass from Corning has been trusted by scientists for more than 100 years. The unique chemically stable, heat-resistant, low-expansion borosilicate formula of PYREX glass from Corning has been trusted by scientists for more than 100 years. PYREX brand funnels are mechanically strong, chemically inert, and thermally stable. Molded to an accurate 60° angle for ease in fitting filter paper with inside flutings to increase filtration rates. Separatory funnels feature smooth tooled tips and carefully aligned stopcock bores, body openings, and stems for even liquid flow. PYREX Low Actinic Labware is made from Code. No. 7740 glass with copper replacing the sodium in the glass matrix at the surface. PYREX assortment packs include one each of the most popular sizes of either beakers, cylinders, or Erlenmeyers. Low expansion, Type I, Class A borosilicate glass (DD-G-54 lb, ASTM E-438, USP specifications for Type I borosilicate glass).