Successfully operating a siphon in a vacuum, using an exotic ionic liquid that can handle the extreme conditions. With thanks to Adrian Boatwright and Pete Licence. The paper (not free unfortunately) is at http://pubs.acs.org/doi/abs/10.1021/ed2001818 More chemistry at http://www.periodicvideos.com/ Follow us on Facebook at http://www.facebook.com/periodicvideos And on Twitter at http://twitter.com/periodicvideos Periodic Videos films are by video journalist Brady Haran