Rubber Cones Set of 7-EIS-CH0421 offers a thoughtfully designed, durable resource for hands-on learning. SET OF 7 || Size 1-7 tapered, blue-colored filter adapter cones FOR BUCHNER FUNNELS || Designed for use with Buchner funnels in filtration assemblies DURABLE & STURDY || Made of quality, flexible neoprene rubber - Good chemical stability and can withstand a wide temperature range - Autoclavable STACKABLE || Can be nested within different size cones for convenient storage MEASUREMENTS || Cones vary in size - Height: 20mm to 43mm, Top: 22mm to 81mm, Bottom: 11mm to 57mm Set of 7 tapered filter adapter cones. Made of quality, flexible neoprene rubber. Good chemical stability and can withstand a wide temperature range. Autoclavable. These adapter cones are made for use with Buchner Funnels in filtration assemblies. 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.