and large surface contact ensures an excellent vacuum tight seal whilst the rings are easy to remove and offer excellent support to even the largest funnels. It is commonly thought to be named after the Nobel Laureate Eduard Buchner (without umlaut), but it is actually named after the industrial chemist Ernst Büchner. See also Agitated Nutsche Filter – the industrial-scale analog of the Büchner funnel. References Further reading Laboratory glassware German inventions