Aqua Sorb is a cross-linked polymer, which only absorbs water-based or aqueous solutions. It is comprised solely of sodium polyacrylate. Particle size varies from ¼ inch to 45 microns in diameter. Classified as a super-absorbent, Aqua Sorb takes an aqueous solution from a liquid state to a semi-solid state that is a gel, not a completely solid waste mass.