ACG Materials brand of Calcium Sulfate, is a high purity, fine, soft white dihydrate form of gypsum with a specific gravity of 2.32, a typical pH of 7.5. Typical average particle diameter of ACG Valu-Fil is 18 microns. Maximum solubility 2 grams per liter or 7.7 grams per gallon. Can not be used in concentrated stock solutions.
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