sorry, eng not my first language. here my question again, i have a simple jacketed condenser. i know that for hcl set up. u pack the frac column with damp rid pellets. all swim has is a JACKETED CONDENSER to be used as a drying column packed with damprid, cuz swim dont have a frac column. using tfse i found that they use a fractionating columns, but nothing on condensers. thanks for the link pickler.that method sounds promising.