Section 8, Weights and Measures Act, 2010

(1) The Minister shall cause the primary standardsverified at least once in every ten years at the International Bureau of Weights and Measures. (2) Where the Primary Standards are to be sent out for such verification, the Minister shall cause to be deposited with the Sierra Leone Standards Bureau such secondary standards, as he may consider necessary, after having provided for them to be compared and verified with the primary standards in such manner as he may direct and such secondary standards shall be deemed to be the primary standards during such time as the primary standards are out of Sierra Leone. (3) The secondary, tertiary and working standards shall be compared and verified by the Sierra Leone Standards Bureau at such intervals and in such manner as the Minister may determine. Secondary Tertiary Working Verification to be of (4) On being satisfied of the accuracy of the secondary, tertiary or working standards, as the case may be, the Sierra Leone Standards Bureau shall issue certificates of verification and such certificates shall be retained by the persons who have custody of the relevant standards. (5) All secondary, tertiary and working standards which have been duly verified and certified shall, for all purposes, be conclusively deemed to be true and accurate and judicial notice shall be taken of every such standard. (6) The Minister may at any time cancel any secondary, tertiary or working standard and shall by notification in the Gazette direct that such cancelled standard shall no longer be used for the purposes of this Act.