19.—(1) Any person who manufactures, imports or supplies any container for use as a portable petrol storage container must ensure that the container meets the standards for such containers specified in Schedule 3.
(2) In any proceedings for an offence under paragraph (1) it is a defence for any person who supplied the container, but did not manufacture it, to prove that the person took all reasonable precautions and exercised all due diligence to avoid the commission of the offence.