The worm and its surrounding
bath of cold running water, or worm-tub, form together
the condenser unit of the Pot Still process of
manufacture. The worm itself is a coiled copper tube of
decreasing diameter attached by the Iyne arm to the head
of the Pot Still and kept continuously cold by running
water. In it the vapours from the still condense. Fed by
the still, it in turn feeds the receiving vessel with the
condensed distillate.
The worm is being replaced gradually by the more
modern tubular condenser.
© SWA 1995