1, New-High Technology 2, Professional manufacturer 3, ISO9001, 14001, 22000, HACCP 4, High quality and competitive price. ... crystalline powderWhite to tan crystalline powderIndentificationMeet the requirementsMeet the requirementsPurity,%99.5-102.099.5-102.0Loss on drying,%0.30max0 ... , μg/g30max100maxLead, μg/g1max1maxClaritycolorlesscolorlessPH6.5-7.86.8-7.8 99.0%min Sodium gluconate tech grade