Pro Citric Acid is also know as Ban-T and this bottle is a 1.5 lbs. container. Pro Ban T is a water softener iron removal cleaner that is specially formulated to effectively lower pH and remove iron and other contaminants from fouled water softeners. The water softener iron removal cleaning powers of Ban T should be used as preventative maintenance on all water softeners in areas with moderate iron content to maintain the life of the softener. Ban T is an environmentally friendly water softener iron removal cleaning agent that removes hard water deposits, lime scale and moderate iron staining from household fixtures.