Safe, mild acid cleaning concentrate for the removal of lime, hard water salts and stains, oxidation, tarnish and cement or concrete dust deposits from aluminum, copper, brass, stainless steel, iron, masonry, concrete, plastic, fibreglass, and most painted surfaces. Dissolves cement dust from truck cabs and bodies without harming painted finishes. Use for the preparation of cement floors before application of seal or finish. Improves efficiency of air conditioning, refrigeration, steam and water cooling coils. Safe and effective for cleaning sludge belts, digester lines and fine bubble diffusers in water pollution control plants.