Use and store between 65°– 80°F (product and ambient temperatures), 45°F minimum. Use below 45°F requires special hardener selection, consult with Rhino sales personnel for low temperature recommendations. Remove all surface contaminates such as water, dirt, rust, and petroleum products. Mold surfaces must be waxed or otherwise “released” prior to epoxy application. All Rhino Hardeners are compatible with Rhino 1301AR and should be proportioned in accordance with the selected Rhino Hardener mix ratio. Use of 1301AR resin in RTM or filament winding processes require specialized hardener(s) and equipment. Mix resin and hardener for 3 – 5 minutes being certain to scrape the bottom and sides of the mixing container. Mix no more material than can be applied before the expiration of the pot life.