15. Subject to regulation 16, a person who sells pre-basic seed potatoes, basic seed potatoes or test and trial seed potatoes shall furnish to the purchaser not later than 14 days after the sale or, if the seed potatoes are not delivered at the time of sale, not later than 14 days after delivery, a sale note, delivery note, invoice or similar document setting out in relation to those seed potatoes the following particulars—
(a)the name and address of the seller;
(b)the declared net weight;
(c)the variety;
(d)the category;
(e)the grade (if appropriate);
(f)the size;
(g)the producer’s identification number or reference number of lot;
(h)the particulars of any chemical treatment; and
(i)genetically modified (if appropriate).