SODIUM PERCHLORATE APPEARANCE : WHITE FINE CRYSTALS ASSAY : 99% MIN INSOLUBLE MATTER : 0.05% MAX CHLORIDE (Cl) : 0.03% MAX SULFATE (SO4) : 0.02% MAX CALCIUM (Ca) : 0.02% MAX POTASSIUM (K) : 0.05% MAX HEAVY METAL (as pb) : 25 PPM MAX IRON (Fe) : 25 PPM MAX ALL THESE ANALYSIS ARE ANALYSED AT OUR OWN LAB.