My column head is almost 8 feet from the floor. I use
a dial type thermometer which is easily read. However
it ends up that the thermometer readings don't mean much.
After the still warms up the thermometer parks on 170F.
I can detect the end of the run by smell before the
temperature moves much at all. I would highly recommend
a taller column. My column isn't taller because I'd have
to cut a hole in the ceiling!!!! What might be easy
for you is to use one of those rotary pipe cutters and
cut your column in half. Then solder in a pair of threaded
fittings. You can then screw your column together and use
it at it's present length, or insert a longer column piece
which also has threaded fittings on the ends.
Use threaded-to-sweat fittings instead of a union. It's about
1/4th the price
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, "cletemeaders" <spacejug@a...>
> My 24" column & head gives me the best Ive had. But only drank
> from old-fashion pot still. The reason I asked was if I go to a
> three-foot column, I'd have to stand on a cement-block to see my
> thermometer. Can see the advanages now of the taller column
> producing reflux continously while the same vapour would have to be
> recycled back-thru (with my compound-head). think I'll take the
> extra time and avoid stepping-up on the block. (which I did
> thousands of times on my first & only run which came back 90%).
> Since my column & boiler-top are one piece. The 2" column is easier
> to store. Plus, while learning this if I kept changing cloumn-
> heights .. How would I know if Im learning to operate to head
> (reflux ratios, take-off rate, etc.)approperily? a simple answer
> a beginner if possible. clete