Materials
Two well plates 6, lid
for well plate 6, silicone rubber tube or transfusion tube (photo 1 and 2),
12 cm needle or two plastic pipette tips (photo), digital multimeter (Conrad
VC 333 / 129410, microscale spirit burner or electric hotplate
(photo 1), 5 mL (photo 1: 10 mL) distillation vial with septum, clamp or
stand (photo 1), water, ethanol solutions, red wine or petroleum (photo
1 and 2) for distillation
Experimental
(for red wine)
1. Put into the distillation
flask 3-4 mL of the solution to be distilled.
2. Add a small copper wire coil for smooth boiling.
3. Set the distillation
apparatus as described in photo 1.
4. Hold the distillation vial
with a clamp and heat it gently over the microburner.
5. The well plate 6 has to be
immersed in ice-water.
6. Control the distillation by
lifting or lowering the distillation vial. The distillate should come out
clear and colourless. If some color comes out with the distillate, stop the
distillation and restart it.
7. When the temperature has
reached 80 / 100°C remove the tube from well 1 and connect it to well
2 / 3.
8. When the distillation is
over, stop the heating and remove the lid from the collecting well. Not doing
so causes the drawback of distillate to the distillation flask.
9. Check distillate 1 for burning
and distillate 3 for electric conductivity.