Rapid ECH0464A Buchner Funnel, Polypropylene has a diameter of 75mm. The two part Buchner funnel is both light weight and autoclavable. The top portion can be fitted with the lower one, forming a vacuum seal which does not require greasing. The base of the top portion has a perforated filter plate. The funnel stem measures 60mm with an inner diameter of 8.7mm - When fully assembled the funnel measures 145mm in length, with an inner diameter of 72.5mm. For use in filtration (separation of solid matter and fluid).