31.
| (1) In the absence of evidence to the contrary, a document purporting to be a report or a certificate signed by the Approved Analyst or an Additional Approved Analyst upon any matter submitted to him for examination or analysis shall be sufficient evidence of the facts stated therein. |
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| (2) When a party against whom a report or a certificate referred to in subsection (1) is produced requests the Approved Analyst or an Additional Approved Analyst, as the case may be, to be summoned as a witness, the court shall summon him on that party paying to the court the expenses of summoning him and shall examine him as a witness. |
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| (3) The report or the certificate referred to in subsection (1) shall not be received in evidence unless the party intending to produce it has given the party against whom it was intended to be produced a copy of the report or the certificate and reasonable notice of his intention to produce it. |
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Sri Lanka Consolidated Acts