Assemble the apparatus for a simple distillation (see Figure 13.7 on p. 149). You
should refer to the sample set-up provided in the yellow fume hood, especially noting the
placement of clamps. Note that the position of the thermometer bulb should be right
below the opening of the three-way distillation head. Position a thermowell under the
distilling flask on a ring clamp. Should the heating become too vigorous, the thermowell
can be lowered by lowering the ring clamp. Do not grease the joints when setting up the
distillation apparatus as it may contaminate the liquids you are distilling. Attach the
vacuum adapter to the condenser using a Keck clamp. Note the direction of the flow of
water in the condenser as indicated in the figures. Water enters the condenser at the
tublature nearest the receiver (you can try hooking up the hoses “backwards” to observe
the difference). Because of the large heat capacity of water, only a small stream is needed;
too much water pressure will cause the tubing to pop off.