- Porcelain Etch is a buffered, viscous, 9% hydrofluoric acid. Silane is a single-component solution. - Porcelain Etch is designed for intraoral or extraoral porcelain etching. - Use it to etch porcelain or old macro-filled composites before bonding and repair. - Also use it when in-office etching of indirect restorations, such as veneers, inlays, etc., is required. Packaging: - 2 Syringe x 1.2 ml. **For further Product Information Please Contact Chat Support**