Can I connect a longer column between the condenser and the still and make purer alcohol?
Yes, using a longer column will likely result in slightly purer alcohol but you will have to compromise a little time and volume. A ready to fit extension column is now available from Still Spirits distributors. This unit is designed to fit both the reflux & super-reflxk condensers & it does make a significant difference.
Note that our turbo's and carbons produce high quality alcohol without modifying your reflux still so if you are an "average" distiller, you may not have a need to upgrade your still. However, if you are a real enthusiast & spirit perfectionist, the extension column could be of considerable interest.