- This porcelain etching gel is 9.6% hydrofluoric acid for etching crowns, veneers, inlays, and fractured porcelain surfaces prior to bonding. - There is virtually no risk of staining the porcelain, composites, or resin cements, and the gel easily washes off. - One-minute etch. - 9.6% hydrofluoric acid. - Stays where placed. - Thixotropic. - Easy to wash off; will not stain. - Contains: - Porcelain etch gel kit (4) x 1.2ml syringes. **For further product information, please contact Chat Support**