Funnel Filter 150mm, Borosilicate glass, plain at 60° angle-EIS-CH0456F offers a thoughtfully designed, durable resource for hands-on learning. Borosilicate glass 15 cm (150 mm) wide, with a 15 cm (150 mm) stem Funnel wall is 1.5 mm with a 2 mm stem thickness Approximately 26 cm in length The 15 cm (150 mm) Funnel Filter is made of borosilicate glass and has a 60 degree angle at the end of funnel. Stem has an inner diameter of 13mm and an outer diameter of 16mm. Autoclavable, with superior chemical durability. Low temperature gradient- can withstand high temperatures & thermal shocks. Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C. Eisco Labs proudly manufactures its own products using state-of-the-art equipment, and following the highest standards of quality control. Each product is carefully designed by a team of laboratory professionals and experienced engineers with quality and durability in mind. They are manufactured with only the highest grade, raw materials and according to international quality standards to ensure that they can withstand use in even the toughest laboratory environments.