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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(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 recommends).
# 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 recommends), and soak overnight.
# Rinse thoroughly with hot water (cold water may not remove some of the residual chemicals).