Strontium Nitrate Hardening Agent & Promoter is an aqueous non-alkali, non silica, ionic chemical solution which enhances and promotes C-S-H reactions. The deep penetrating, initiating chemistry can be formulated to any pH as well as compatible with silanes, siloxanes, surfactants and/or other additives. The unique hardening properties improve abrasion, stain and wear resistance with the reduction water absorption on porous surfaces. Used as a topical treatment such as primer, curing agent, hardener / densifier and finishing aid for industrial and polished surfaces. Strontium Nitrate 30% is an aqueous non-alkali, non silica ionic chemical solution which enhances and promotes CSH reactions.