Units of Quantity
15. For the purposes of Schedule 1, the figure denoting the relevant units of quantity in the second column of the table for the corresponding product in the first column of the table refers, as indicated by or under the Weights and Measures (Northern Ireland) Order 1981, and unless specified otherwise to –
(a)grams where the product is sold by weight;
(b)millilitres where the product is sold by volume; and
(c)either grams or millilitres, as indicated by the manufacturer of the product, where the product is permitted to be sold by either weight or volume.