Duda Energy 5ssf Natural Sodium Sulfate Food Grade FCC 99+% Granular Anhydrous Crystals Salt Made in USA, 5 lb. 99+% Pure, Crystalline/Granular, Anhydrous (without water) Food Grade / FCC (Food Chemical Codex)! Excellent Drying Agent and Electrolyte / Salt! Made in the USA! See Description on how to make Gaber's Salt