Prime Dental Products offers etchants in two consistencies, soft gel and thick liquid. The formulation is based on 37% phosphoric acid indicated for composite restorations, indirect restoration like composite or metal free ceramics along with recommended adhesive cement and bonding orthodontic brackets. Also the etchants are developed silica free since left over silica particles are known to be detrimental for bonding. It is stored in cool dark place and kept away from direct flame.