US EPA factsheet 7/15/95 for
Do-it-yourselfers on venting, recovery, etc
US EPA Ozone Homepage
Oil-Refrigerant
research conducted at Luleā University in Sweden.
Lubricants and refrigerants @ CPI
Engineering
ATC Specialists homepage
(R-406A & GHG-X4 distributor)
Other, nonrefrigerant homepages