- Uni-etch is a 32% phosphoric acid which sets the industry standard for semi-gel etchants. - Utilizing a polymer filler to create thixotropic properties, handling characteristics are enhanced, thereby leaving no silica debris on the etched surface which impede the flow of primer and/or resin over the surface or into the dentinal tubules. - Select hv etch: 35% gel phosphoric acid: syringe 5 gr. **For further product information, please contact Chat Support**