Walchem Diaphragm Metering Pumps are designed to reliably inject Chemicals like Sodium Hypochlorite (Chlorine), Sulfuric Acid, Sodium Hydroxide (Caustic), Hydrochloric Acid (Muriatic Acid), Ferric Chloride, Aluminum Sulfate (Alum), Sodium Bisulfate, and other Industrial Water Treatment Chemicals