Description: 250ml Buchner Funnel Apparatus Filteration Kit for Vacuum Suction Specifications: Material: Borosilicate Glass 3.3 Standard: ISO international standard Capacity: 250 mL Size: As the picture shows Usage: Connect the hose connection on the filter flask to a vacuum pump to do vacuum filting. Package Included: 1x 250ml Glass Filtration Flask 1x 60ml Porcelain Buchner Funnel 1x Rubber Stopper 1x Rubber Hose(1.15m) More Details: