56.1. In any proceeding instituted for an offence against this Act or the regulations,
(a) the certificate or report of analysis of an authorized person stating in writing the results of an examination respecting the composition of a product, constitutes primafacie proof of its content if the person attests in the certificate or report of analysis that he personally observed the facts stated therein;
(b) the minutes or report of an investigation, taking of samples, seizure or confiscation written and certified by an authorized person who has inspected, sampled, seized or confiscated a product or who has carried out any inspection in an establishment, vehicle or premises, make primafacie proof of the observations that are stated in writing therein by such authorized person if the person certifies in the minutes or report that he personally observed the facts stated therein;
(c) a document, given as the certificate or report of analysis of an authorized person or the minutes or report of an authorized person, must be admitted as proof, without its being necessary to establish the signature of the person by whom the document is presented as having been signed and without its being necessary to establish the official capacity of such person.