Ultra-Etch Kit: 4 x 1.2 ml Syringes, 164About this product 35% phosphoric acid based etching gel, suitable for total etching. It penetrates into the smallest cracks and does not slide on a vertical surface. It has a self limiting etch depth on dentine that will not significantly exceed the limit of 1. 9 m. Its intense blue colour allows a better visibility of the professional. Ultra Etch has ideal viscosity, which makes precision placement easier and superior control. Although Ultra Etch is