Industrial classifications usually separate emulsions by ionic charge (cationic, anionic, non ionic), setting behavior (rapid, medium, slow), modification (polymer, latex, rubber), and intended use (tack, prime, surface dressing, slurry, cold mix, waterproofing). Additional classification can be by base binder type and hardness, binder content, and residue performance. Many markets also classify by standard grade codes that embed charge and setting speed. For plant design, the key classification is the emulsifier system and breaking behavior because it dictates pH control, chemical dosing, and sensitivity to shear and contamination.