... ), JIAOZHOU, QINGDAO, CHINA Tel/Fax: +86-532-82212928 Contact Person:DianaCertificate of AnalysisFLUX CALCINED DIATOMACEOUS EARTH FILTER AID QH-300#PHYSICAL ... PROPERTIESCHEMICAL PROPERTIESGradeQH-300#SiO2≥89.7%ColorWhiteAl2O3≤4%DescriptionFlux Calcined Filter AidFe2O3≤1.5%Specific Gravity2.3 g/cm³ ... Ltd.16-1, No.48, Luzhou Road,Jiaozhou, Qingdao, China Calcined Diatomaceous Earth QH-500#