Bisco Porcelain Etchant 4% Without Barrier Gel, 7g Bottle

The Bisco Porcelain Etchant 4% Without Barrier Gel is a hydrofluoric acid etching gel formulated for conditioning porcelain and other silica-based ceramic surfaces prior to adhesive bonding. Supplied in a 7g bottle, this 4% hydrofluoric acid gel creates controlled surface micro-roughness to enhance micromechanical retention for resin cement and bonding agents. The gel consistency allows precise application to porcelain restorations such as veneers, inlays, onlays, and crowns while maintaining visibility during the etching process.