粮食盐表

SUBJECTSTANDARDCharacters White Crystals specification 30-100mesh Identification Passes test Clarity and color of solution Clear and colourless Acidity or Alkalinity Passes test Tartrate Passes test Chlorides 50 ppm max Sulphates 150 ppm max Oxalates 100 ppm max Heavy metal(as Pb) 5 ppm max Lead 1 ppm max Readily carbonisable substances Not deeper than standard Pyrogens Passes test Loss on drying 11.0-13.0% Arsenic 1ppm max Mercury 1ppm max PH 5%aqua solution 7.5-9.0 Purity 99.0-101.0