Cortec patented Vapor phase Corrosion Inhibitor (VpCI) technology, VpCI-391 provides a water-borne coating for medium to long-term outdoor protection.It is classified as a temporary coating because it can be removed with alkaline cleaners. The product features excellent salt, humidity, and UV resistance for outside applications. In addition to being water-borne, the coating is a complex mixture of non-toxic organic inhibitors formulated with a water-based acrylic polymer. It provides a very low VOC that dries to a resilient, tack-free coating in 30 to 60 minutes. This coating incorporates Cortec’s patented VpCI technology for corrosion protection for aluminum, carbon steel, cast iron, stainless steel, and galvanized steel. It allows metal equipment, parts, and structures to withstand outside exposure or storage without deterioration due to corrosive attack.  Because the product is a clear coating, users can easily determine the condition of metal surfaces with simple visual inspection. It conforms to ASTM B-117 Standard Practice for Operating Salt Spray (Fog) Apparatus and ASTM D-1748 Standard Test Method for Rust Protection by Metal Preservatives in Humidity.