Vapor Reduction Technology reduces up to 90% of harmful vapors normally associated with 'old school' muriatic acid Controls the pH level of water in pools - super effective pool water balancer Brightens concrete & masonry surfaces Removes stains from driveways or garage floors Safer & Easier to use compared to standard muriatic acid AcidBlue by Champion is a buffered, low-fume replacement for standard muriatic acid. AcidBlue does NOT permeate through plastic bottles and is the latest in pool chemical advancement. This product is a leading choice for swimming pool, masonry, and many other uses! br Available in 1-gallon jugs.