An Essential Oil Determination Apparatus is a laboratory setup used to determine the composition of essential oils. Essential oils are complex mixtures of volatile organic compounds and are commonly used in perfumes, flavorings, and natural medicines. The specific components of an Essential Oil Determination Apparatus can vary, but typically it includes a sample injector, a chromatography column, a detector, and a collection system.

The sample injector is used to introduce the sample into the chromatography column, the chromatography column contains the stationary phase that separates the components of the essential oil, the detector measures the quantity of the individual components as they elute from the column, and the collection system collects the purified sample components.

The Essential Oil Determination Apparatus works by separating the components of the essential oil based on their physical and chemical properties, allowing for the determination of the composition of the oil. This information is useful for the quality control and characterization of essential oils, as well as for the identification of unknown oils.