(4) gallon containers. Not only is Stone Logix Neutral Cleaner safer for the environment, it safely cleans natural stone fast and easy. Core’s unique chemical blend breaks down oils, grime and dirt making it simple to mop away. Restores and brightens tile and grout to its original color with oxygen power. The easiest and most cost effective way to clean! Maximize your chemical usage and know your getting the proper dilutions desired. This self contained, wall-mounted dispenser accurately measures each dilution using preset metering tips. No more wasting product, time and money! Each dispenser holds 1 gallon of Stone Logix Concentrate and provides two convenient filling points. Usage of the dispenser is simple! Dispensers come completely assembled and ready to mount on any vertical surface. Connect the supplied in-line hose to a cold water source and your in business!