SPIC GYPSUM is really a by-item from SPIC's phosphoric acid producing plant. It is really in White crystalline powder and has 23% Calcium and 18% Sulphur. It is a super fertilizer for supplying Calcium and Sulphur and the best soil Modification for that reclamation of alkaline soil.SPIC SULPHUR ninety% WDG is a possible source of Sulphur fertilizer