... BromideIndustry GradeMedicine GradePhoto GradeAppearanceWhite CrystalAssay,% 99.0MIN99.3 MIN99.5 MINChlorides,% 0.2 MAX0.2 MAX0.2 MAXSulphates, PPM ... 200 MAX100 MAX50 MAXLoss on Drying,% 0.5 MAX0.5 MAX0.5 MAXHeavy Metal (as Pb, Hg)PPM5.0 MAX5. ... PPM 4.0 MAX4.0 MAX4.0 MAXVolatile, %&nbsAp; ----Qualified0.5 MAXBromates, PPM QualifiedQualified10 MAXIodide, PPM ----Qualified50 MAXMinor Elements, PPM ...