> Message: 4 > Date: Sat, 26 Jan 2013 16:28:19 +0100 > From: Fabio Eboli <fabi...@quipo.it> > To: Discussion of precise time and frequency measurement > <time-nuts@febo.com> > Subject: Re: [time-nuts] OT, looking for a good science forum > Message-ID: <5ef3f142b075fcab38182666a4e50...@quipo.it> > Content-Type: text/plain; charset=UTF-8; format=flowed > > Il 2013-01-26 14:58 Bob Camp ha scritto: > > Hi > > > > Platinum RTD's are a pretty good bet for -80C, they hold up well down > > there. For calibration, ammonia and acetylene both have triple points > > in the vicinity. I'd probably try ammonia first, but not for any good > > Doesn't acetylene have a bad habit of dissociate when pure liquid? > > Fabio. >
Yes, it's normally stored disolved in acetone. It also spontaneously dissociates if pressures exceed 15 psig or 30 psi absolute. That could put a real damper on your day. -- Paul Amaranth, GCIH | Rochester MI, USA Aurora Group, Inc. | Security, Systems & Software p...@auroragrp.com | Unix & Windows _______________________________________________ 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.
