(1) Every Working Standards shall be verified either at any of tne Reference Standards Laboratories or at any of the Secondary Standards Laboratories maintained by the State Government. in such manner and at such periodical intervals as may be prescribed under the rules and shall, if found on such verification to conform to the standards established by or under the Act. be stamped by Reference Standards Laboratory or by Secondary Standards Laboratory, as the case may be. or a certificate of verification will be issued ,by that laboratory, as the case may be.
(2) The Working Standards shall be kept in the custody of legal metrology officer.
6. Secondary Standard Balances.·- (1) A set of Secondary Standard Balances shall be maintained at every place where Secondary Standard Weights are kept.
(2) The number, types and specifications of such balances shall be such as may be prescribed under the Legal Metrology (General) Rules, 2011.
(3) Every Secondary Standard Balance shall be venfied at least once within a period of twelve months and shall be adjusted, if necessary. to make it correct within the limits of sensitivity and other metrological qualities prescribed under the Act, by the Reference Standards Laboratory or by the Controller or such other officer as may be authorized by the Controller in this behalf.