Section 71B(8)(a) in Maharashtra Factories Rules, 1963
(a)Every portable fire extinguisher to be provided under sub- rule (7) shall-(i)conform to the appropriate Indian Standards Specifications;(ii)be kept charged ready for use properly mounted in a position approved by the Inspector and accompanied by the maker's printed instructions for its use; and(iii)be examined, tested or discharged periodically in accordance with the maker's recommendation.