PBW stands for Powder Brewery Wash, which is a non-hazardous buffered

alkaline brewery cleaner. PBW is the cleaner of choice for many

breweries, where it out performs more hazardous caustic chemicals

without removing the flesh off your bones. PBW also will not corrode

soft metals. Comes in a jar with screw top lid.

When mixing hot water and PBW in an air or water tight space, it will

create pressure. Please use caution when using PBW in enclosed

equipment.