Hydro distillation process :-
At times used in spite of steam distillation, Hydro distillation process is a method that is used for the extraction. This process of extraction is considered to be one of the most used and spread traditional methods of extraction. The working of this process is that rather than passing the steam through powdered wood in the hydro distillater, the powdered wood is soaked in water for a good period of time. Then the water container containing the powdered wood is heated until the steam bulges out and then it is left to cool down in temperature and when it entirely turns cold, the oil from the top of the hydrosol is collected.