Spray PolyPurge into open Polyurethane Part A and B containers just before resealing to displace moist air and extend the product life. PolyPurge is heavier-than-air and is nonflammable and non-ozone depleting. It is packaged in an aerosol-type can with a special nozzle extension useful for directing the gas into the desired space. FOR INDUSTRIAL/PROFESSIONAL USE ONLY.