PRIME GUARD minus 50 Deg. F RV and Marine Antifreeze is a premium winterizing formulation safe for use in all types of potable water & plumbing systems. This ethyl alcohol formula is safe on copper, brass and all plastics (except acetate). This product is formulated to provide complete protection to minus 50 Deg. F. Some slush may appear at approximately 0 Deg. F, but this is not harmful to your water system. As temperature rises, and fluid warms, slush will disappear.

Product Features:

• Non-Toxic.
• Effective to -50 Deg. F
• Meets industry standard for burst protection in copper pipes
• Glycerin Free
• Convenient, ready to use solution
• Safe for incidental contact with people, pets & wildlife
• Safe on copper, brass & all plastics (except acetate)