essential oil extraction Distillation in the water
Water distillation is to put the material that needs to be distilled into the still pot, and the pot is filled with water, and the proportion of water and material varies according to the different materials. Specific methods such as "water distillation". 

Steam distillation essential oil extraction
Steam distillation is to put the material to be distilled on the screen plate in the still pot, and the saturated water vapor is passed under the screen plate to achieve the purpose of distillation.