This standard prescribes requirements for indus-trial faceshields with wire mesh visor used for protection of the face against heat and glare during furnace operations and operations involving hot material, molten metal and slags, and their methods of test and sampling.
IS 8521 Pt.2-1994 history
1994IS 8521 Pt.2-1994 Industrial safety masks—Specification for face masks with wire mesh Part 2