14.—(1) If a person has in his possession for sale, agrees to sell or sells a package in circumstances in which he knows or has reasonable grounds for believing that the package has a negative error greater than twice the tolerable negative error, he shall be guilty of an offence.
(2) If a person has in his possession for sale, agrees to sell or sells a package in circumstances where he knows, or has reasonable grounds for believing, that the package comes from a batch of packages which has failed the reference test, then he shall be guilty of an offence unless he can show that:
(a)he had reasonable grounds for believing that corrective action had been taken after the batch had failed the reference test to ensure that the batch subsequently complied with the requirements of regulation 4, or
(b)the actual quantity of the package exceeded the nominal quantity.