Acid Etch is glycerin-free, providing a cleaner, rougher, increased surface area free of bio-film. Acid Etch creates a deeper etch pattern for an easier application of bonding materials. For increased patient comfort and easy clean-up, Acid Etch is highly viscous, allowing for more accurate placement. Acid Etch is odorless, tasteless, and available in a 37% concentration blue formula. Standard Kit: 4 - 3 ml syringes Acid Etch 37%