The exact required for your local climate's freeze protection.
Food-grade antifreeze is essentially high-purity , specifically those labeled as USP Grade (United States Pharmacopeia) or FCC (Food Chemicals Codex). Unlike toxic automotive antifreeze (ethylene glycol), food-grade PG is "Generally Recognized as Safe" (GRAS) by the FDA for indirect or limited direct food contact. 🛒 Where to Buy Food-Grade Antifreeze where to buy food grade antifreeze
✅ : Meets United States Pharmacopeia standards for purity (usually 99.5%+). The exact required for your local climate's freeze
: Sells pink "RV/Marine Antifreeze" which is typically non-toxic and PG-based, though check labels for additives if you need 100% pure PG. 2. Specialty Chemical Suppliers (Best for Professionals) 🛒 Where to Buy Food-Grade Antifreeze ✅ :
: Look for brands like Sanco Industries or Duda Energy which explicitly list "USP Grade".
Whether a solution or a concentrate is more cost-effective for you. Food Grade Propylene Glycol 99.9+% Purity | eBay Food Grade Propylene Glycol 99.9+% Purity | eBay. Public Health Statement for Propylene Glycol - CDC
: Never use "Industrial Grade" PG for food applications; it may contain trace impurities from the manufacturing process that aren't safe for ingestion.