Section 48(a) in The Bureau of Indian Standards Rules, 2018
(a)at any time during the usual business hour enter upon any premises in which any goods, article, process, system or service, in respect of which a licence or certificate of conformity has been granted, with a view to ascertain that the Standard Mark is being used in accordance with the terms and conditions imposed by the Bureau and that the Scheme of inspection and testing specified by the Bureau is being correctly followed;
