Food-grade silicone is platinum-catalyzed, free of BPA, phthalates, and heavy metals, and tested to FDA 21 CFR or LFGB standards for food-contact safety. Regular or industrial silicone may be peroxide-cured and is not tested for food-contact migration. For any product that contacts food, beverages, or infant mouths, food-grade (platinum-cured) silicone is required.