Section 21
Analyst’s certificate to be prima facie evidence
(1)
A certificate of analysis purporting to be under the hand of an analyst shall, on production thereof by the prosecutor, be sufficient evidence of the facts stated therein unless the defendant requires that the analyst be called as a witness, in which case he shall give notice thereof to the prosecutor not less than three clear days before the day fixed for the hearing of the summons.
(2)
In like manner a certificate purporting to be under the hand of an analyst shall, on production thereof by the defendant be sufficient evidence of the facts stated therein unless the prosecutor requires that the analyst be called as a witness.
(3)
A copy of such last-mentioned certificate shall be sent to the prosecutor at least three clear days before the day fixed for the hearing of the summons, and if it is not so sent the court may adjourn the hearing on such terms as it may think proper.
Court may order independent analysis 22.
When a sample has been dealt with in accordance with section 7, the court before which any proceedings for an offence against this Act are heard shall on the request of either party to such proceedings, and may if it thinks fit without such request, order that the part of the sample retained by the officer be submitted to another analyst for analysis.