Dear Peter, >> I'm also reasoning that these seven processes further get rid of those more 'grosser' substances that could impeed the ability of the fluid condenser to hold a charge? << Yes. My best to you, :) Rawn Clark 13 Jan 2003 rawnclark@... rawn@... http://www.ABardonCompanion.com http://groups.yahoo.com/group/BardonPraxis