4.—(1) Every person who conveys, stores or supplies any article, substance, combination or unit load to which these Rules apply shall ensure that this Part is complied with in relation to the article, substance, combination or unit load and its packaging, if any.
(2) No article, substance, combination or unit load to which these Rules apply shall be conveyed, stored or supplied unless —
(a)
it has been classified according to its composition and the form and packaging, if any, in which it is to be conveyed, stored or supplied;
(b)
it and its packaging, if any, comply with rules 5 to 9 and the Third Schedule;