Section 8(3)(b) in The Bureau of Indian Standards Rules, 2018
(b)Experience : at least twenty-five years combined experience in the following areas in the Government or public sector undertakings or autonomous bodies or private sector, namely :-(i)Industrial Engineering Design or Research;(ii)Standardisation;(iii)Quality Control;(iv)Basic scientific and technical research (in case of research experience in a laboratory, the same should be of national repute);(v)Administration: