This product is ideal for glycol systems that need corrosion protection. ChemWorld ADPAC - Glycol Corrosion Inhibitor - 2 oz. Add directly to your glycol system. Approved for use in food and beverage facilities.This is a sample size or for very small glycol volume systems. For manufacturing facilities that do not require food grade corrosion rated material, refer to ChemWorld SR1. ChemWorld SR1 has far superior corrosion protection in water and glycol system.