Section 5(4)(a) in The Bureau Of Indian Standards (Certification) Regulations, 1988
(a)Every licensee shall institute and maintain, to the satisfaction of the Bureau, a system of control to keep up the quality of his production or process by means of a scheme of testing and inspection as indicated in the license, so as to ensure hat the article or process, in respect of which the Standard Mark is being used, comply with the relevant Indian Standard.