Section 83(1) in Delhi Prisons (Transfer of Prisoner, Labour and Jail Industry, Food, Clothings and Sanitation) Rules, 1988
(1)Wheat before being ground into flour should be thoroughly freed from dirt, unsound grain and any other deleterious substances. The flour shall be sifted through a fine perforated zinc sifter (No. 6 gauze) or equally fine wire-gauze.
