The 01200ST Eyewash Station Additive is a concentrate that truly packs a punch. This 8 oz. bottle is included with both the REW01112 and REW01116 eyewash tanks and helps prevent growth of potentially harmful bacteria, fungus, algae and acanthamoeba. These microorganisms can survive mild chlorination and are present in tap water but with the Radians 01200ST additive this can be prevented.