Waste Lock® 770 is a solid, granular Superabsorbent Polymer.  This cross-linked polyacrylate material swells and absorbs many times its weight in aqueous solutions.  Waste Lock® 770 has been engineered to absorb under pressure and has  properties that make it ideally suited for the absorption and solidification of low level radioactive waste (LLRW) and other types of waste sludges.