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200ml capacity. This Buchner Funnel is made of high quality Borosilicate glass. Funnel measures 8.5" in length, and has a diameter of 2.75". Funnel stem has a diameter of 0.5". Eisco Labs Borosilicate glass has the following heat tolerances: Strain Point -515°C | Annealing Point 565°C | Softening Point 820°C.