citric acid mono ,citric acid anhydrous , BP93 , USP23, BP2003 , USP27/28 , E300/331 Quality Standard of Citric Acid AnhydrousITEMUNITBP93BP98USP24Standard of Enterprise Description Colourless Crystals or Crystal PowdersIdentification Pass Pass Pass PassContent%99.5-101.099.5-101.099.5-100.5≥99.8%Moisture%≤1.0≤1.0≤0.5≤0.20Barium PassPass/PassCalciumppm≤200≤200/≤200Ironppm≤50≤50/≤10Arsenicppm≤1≤1≤ ...