PBW is a buffered alkaline detergent that has been proven to be more than an effective substitute for caustic soda cleaners. Because of its unique formulation of buffers and mild alkalis, it is safe on skin as well as soft metals such as stainless steel, aluminum, and on plastics. PBW uses active oxygen to penetrate carbon or protein soils and is not effected by hard water. 

PBW cleaner is very effective in removing protein soils found on brew kettles, fermenters, conditioning tanks, filters and all packaging areas.  Use 1-2 ounces per gallon of tap water for cleaning boil kettles.  Use 1 ounce per gallon of tap water with fermenters, kegs and other brewing equipment.  Soaking overnight will easily remove stubborn, caked on organic deposits without scrubbing

This product is widely used in commercial breweries.  PBW is environmentally friendly, bio-degradable, and will not harm septic systems.