Specifies essential characteristics of oil of Melaleuca, terpinen-4-ol type obtained by steam distillation of the foliage and terminal branchlets of Melaleuca alternifolia (Maiden & Betche) Cheel or of any other suitable species of Melaleuca. Includes description of determination of two main ingredients and reference to methods of test for determining all other characteristics cited. Guidance on labelling and packaging is also given.