Magnesium Hydroxide, Powder, USPTest Specification Min Max ASSAY (DRIED BASIS) 95. 0 100. 5% LOSS ON IGNITION 30. 0 33. 0% MICROBIAL LIMIT (E. COLI) TO PASS TEST TO PASS TEST LOSS ON DRYING 2. 0% SOLUBLE SALTS TO PASS TEST TO PASS TEST CARBONATE (CO[@3@]) TO PASS TEST TO PASS TEST CALCIUM 1. 5% LEAD (Pb) 1. 5 ppm ELEMENTAL IMPURITIES AS REPORTED AS REPORTED IDENTIFICATION TO PASS TEST TO PASS TEST CERTIFIED HALAL RETEST DATE DATE OF MANUFACTURE APPEARANCE RESIDUAL SOLVENTS TO PASS