Jost Chemical Co. (St. Louis, MO) manufactures calcium salts with very low levels of aluminum, lead, manganese, iron and other vagrant metals for the nutrition and the clinical nutrition markets. The family of products include calcium carbonate, calcium citrate, calcium hydroxide, calcium phosphate dibasic anhydrous (DCPA), and calcium phosphate tribasic (TCP).
For more information, visit www.jostchemical.com/tech_info/HiPurCa.pdf.