Varshney, K GGupta, ASinghal, K C1994-07-012009-06-011994-07-012009-06-011994-07-01Varshney KG, Gupta A, Singhal KC. Use of antimony (V) arsenosilicate beads for estimation of iron content of ayurvedic and allopathic preparations. Indian Journal of Physiology and Pharmacology. 1994 Jul; 38(3): 197-201http://imsear.searo.who.int/handle/123456789/108868A method has been developed for the standardization of Indian ayurvedic drugs containing iron, using inorganic ion exchange material antimony (V) arsenosilicate cation exchanger. The iron present in the drug was absorbed quantitatively on the columns of the exchanger, eluted with a suitable solvent and then titrated against a standardized EDTA solution.engAlloys --chemistryAntimony --chemistryEdetic Acid --chemistryIndiaIon Exchange Resins --chemistryIron --analysisMedicine, AyurvedicMicrospheresTrace Elements --analysisJournal Article