I don't know. There was a very long thread on Tekscopes2, but I didn't follow it as I have some of the real stuff and my probe is not leaking.
Best, -John ============== > Howsabout HFC-236fa - very similar properties to R114 but not banned. > > Dave > -----Original Message----- > From: time-nuts-boun...@febo.com [mailto:time-nuts-boun...@febo.com] On > Behalf Of Jim Lux > Sent: 20 September 2011 22:38 > To: time-nuts@febo.com > Subject: Re: [time-nuts] Making a 10811 better > > On 9/20/11 12:46 PM, J. Forster wrote: >> Likely one of the Freons (TM) or Sulphur Hexafluoride. >> >> Tektronix used a Freon in their 40 KV High Voltage probes. The Vapor >> pressure of some of those compounds is low at 70F, but they do have to >> be sealed. >> >> Unfortunately, virtually all Freon useage has been banned by the EPA >> (they are said to be "greenhouse gases") and the stuff in now almost >> unobtanium. >> >> -John >> > > > _______________________________________________ > 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.