BS ISO 592:1998

This standard BS ISO 592:1998 Essential oils. Determination of optical rotation is classified in these ICS categories:

• 71.100.60 Essential oils

This International Standard specifies a method for determining the optical rotation of essential oils.

When dealing with solid oils, partially solid oils, oils that are highly viscous at room temperature, or highly coloured oils, this determination is carried out on a solution of the oil.