28. (1) A person who has purchased any article of food shall, on payment of such fee as may be prescribed, be entitled to have a sample of such article analysed or otherwise examined by the public analyst appointed for the area in which the purchase was made, and to receive from such public analyst a certificate in the form provided in the Schedule, specifying the result of the analysis or examination. (2) No person shall display any such certificate or copy thereof on his premises or use such certificate or copy thereof as an advertisement.