Hydrodistillation
1. Pulverize raw materials into coarsely powdered
2. Place 25 g. of raw materials into a round button flask 500 ml.
3. Add purified water about 220-250 ml. into a flask and connect to cleavenger apparatus
4. Boil the water until the volume of collected oil dose not increase
5. Wait until oil and condensed water separated completely
6. Record the volume of collected oil
7. Calculate the percentage yield of oil