A high temperature, low-fluxing clay and alumina mixture formulation which contains suspension agents and a color-coded dye that burns off at 800 degrees F (427 degrees C). Used according to directions, shelf primer is the best insurance that your fused work will not stick to the kiln shelf. 24 oz. (680g). Packed inside of easy to access plastic containers. Mixes with water. 1-1/2 pound container.