Q-Gas and PR-Gas Info

["Patrick Wolf" <PWOLF@EHS.AB.UMD.EDU>]

When Nuclear-Chicago used to be in business they made quenching 
counters and proportional counters that would come with gas cylinders 
containing Q-Gas and PR-Gas.    I am looking for information on the 
make-up of these gases. 

 I would appreciate any information available from anyone that knows
 the contents or has a MSDS on hand for these gases.  If you could get
 in touch with me at pwolf@ehs.ab.umd.edu

Thanks
PJW
Patrick Wolf
Univ. of MD at Balt.
(410) 706-6281
PWOLF@EHS.AB.UMD.EDU