supply of food grade phosphoric acid supply of food grade phosphoric acid for various sugar factories of sugar coprporation in uttar pradesh for the season 2021-22 , food grade phosphoric acid ( make & name of country should be mentioned in technical bid ) , indian make food grade conforming to is:10508-1983 ( min. purity as h3po4 percent by mass-85%, specific gravity 25° / 25°c-1.71, impurities well within the prescribed limits as is referred above. ( rates inclusive of packing & forwarding, transportation, insurance charges ) , imported make food grade confirming to is:10508-1983 ( min. purity as h3po4 percent by mass-85%, specific gravity 25° / 25°c-1.71, impurities well within the prescribed limits as is referred above. ( rates inclusive of packing & forwarding, transportation, insurance charges )