PRIME GUARD minus 50 Deg. F RV and Marine Antifreeze is a premium winterizing formulation safe for use in all types of potable water and 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
• Glycerin Free
• Meets industry standard for burst protection in copper pipes
• Convenient, ready to use solution
• Safe on copper, brass & all plastics (except acetate)
• Safe for incidental contact with people, pets & wildlife
• All ingredients are "GRAS" by FDA
• Suitable for all RVs and boats including EV