The laboratory distillation of essential oil from a given material is often required in order to estimate raw material to be used for large scale distillations. The decidedness of the essential oil content is important in explaining the quality of spices and oleoresins, respectively. Such determinations may be easily pulled out in an unique apparatus devised by Clevenger. This particular apparatus offers the following Pros: compactness, cohobation of distillation waters, the actual distillation and separation of the essential oil so that certain chemical and physical properties may be determined, and so that the odor and flavor of the oil may be studied and an accurate determination of the essential oil content using only small quantities of plant material. Furthermore, this apparatus may be used to advantage for steam rectification of small amounts of essential oils.
However, in case of this process of distillation of certain woods or roots of plant; it may acquire much longer span of time may be certain needed. When the distillation has been done it allows an oil to stand undisturbed so that a good quality of separation is obtained; plus that oil must be cool down to room temperature. Determine the number of oil obtained and used to express the yield as a volume or weight-percentage; the motive of it is to give or development.
