Hi You can’t quite process a crystal at 300C, but you can get close.
Bob > On Jun 9, 2017, at 7:38 PM, Neville Michie <namic...@gmail.com> wrote: > > My memory of high vacuum work is that you need to pump for 4 hours > at 300C to remove the water monolayer from glass. > On top of the that water monolayer is another water monolayer that comes off > more easily, > and on top of that another……….. > > cheers, > Neville Michie > > >> On 9 Jun 2017, at 10:57 AM, Richard (Rick) Karlquist <rich...@karlquist.com> >> wrote: >> >> >> >> On 6/8/2017 5:08 PM, Bob kb8tq wrote: >>> Hi >>> In this case hydrogen + oxygen (like from oxidized metal) goes to H20. You >>> very much do >>> not want water running around inside your crystal holder… Helium is inert. >>> Bob >> >> Exactly right Bob. The 10811 guys used to go nuts >> about keeping water out of their vacuum system. >> There were certain temperatures known as "water >> points" at which some water was released. >> The retained water was in spite of the temperature >> already being above 100 degrees C (boiling). >> It has something to do with monolayers of >> water molecules not boiling away. >> >> Rick N6RK >> _______________________________________________ >> time-nuts mailing list -- time-nuts@febo.com >> To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts >> and follow the instructions there. > > _______________________________________________ > time-nuts mailing list -- time-nuts@febo.com > To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts > and follow the instructions there. _______________________________________________ time-nuts mailing list -- time-nuts@febo.com To unsubscribe, go to https://www.febo.com/cgi-bin/mailman/listinfo/time-nuts and follow the instructions there.