Emerald is a synthetic floor cleaner designed for daily use in any floor maintenance program. It's slightly acidic pH will not damage the gloss or film of any finish and is effective at neutralizing harsh cleaner residue on the floor. Contains optical brighteners to enhance the beauty of the floor when it dries. Controlled foam makes this product ideal for use in automatic scrubbers. Will dissolve all ice melt and hard water films, and will never leave the floor with a soap haze. 2-1/2 gallon.