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Tips for using PBW on equipment that may have had biofilm formation <ref>[http://www.fivestarchemicals.com/wp-content/uploads/PBWTech.pdf "PBW Tech Sheet". Five Star Chemicals. Retrieved 04/19/2018.]</ref>:
# For circulated cleaning, use 3 ounces per gallon of 180°F for 30 minutes.
# For non-circulated cleaning, use 8 ounces per gallon of 180°F water (if using this product on plastics, heat the water that is mixed with the PBW to be as hot as the manufacturer of the plastics can withstandrecommends), and soak overnight.
# Rinse thoroughly with hot water (cold water may not remove some of the residual chemicals).