Gypsum Foaming Agent Gypsum is fast in solidification. When mix with water, it produces massive calcium ions and sulfate ions and negatively affect foaming agent stability. Gypsum foaming agent is the answer to this problem. Water Diluent: 30-50 times Output: 1L gypsum foaming agent generates 600-800L foam PH: 7-8 Density: 1.03 Solid content:40% Color: light brownish liquid Packing: 1000kg/barrel Storage: 12 months. Cool place, no direct sun, Application: Gypsum board, gypsum block, wall panel, and gypsum ceiling board.