Food-Grade Propylene Glycol USP for use in Glycol Cooling Systems in any Food Service application. Dilute with distilled water to the ratio specified in the instructions for your chiller.
While Propylene Glycol is considered food grade this is not meant to suggest that it is safe for consumption. Always test your heat exchangers with water to check for pinhole leaks. In case of consumption please contact your local Poison Control Center immediately.