The epoxy-polyamide primer is supplied as a two-part kit. Each part must be stirred or shaken thoroughly before mixing. One component contains the pigment in an epoxy vehicle, while the other component consists of a clear polyamide used as a hardener for the epoxy resin. These components are packaged separately and have excellent storage stability. However, when the two parts are mixed, the pot life is limited to 8 hours. Only the amount that you can use in 8 hours should be mixed. The established mixing ratios must be followed closely, otherwise poor adhesion, poor chemical resistance, or inadequate drying may result. The clear polyamide hardener should always be added to the pigmented component.

The mixed epoxy-polyamide primer can be thinned to obtain the proper viscosity for spraying. However, you should check the local air pollution regulations for restrictions and regulations regarding the use of certain solvents and thinners. To spray epoxy-polyamide primer, you should thin it with MIL-T-81772, type II (preferred) or type I. The thinned primer should be stirred thoroughly, strained, and allowed to stand for a minimum of 15 minutes prior to spraying it. The thinning ratio may vary to obtain the proper spraying viscosity, which is 17 to 18 seconds in a No. 2 Zahn cup. The 15-minute standing time permits the components to enter into chemical reaction, reduce cratering, preclude the clear resin component from "sweating out" or separating, and to allow any bubbles (formed while stirring) to escape.

You should wear goggles when mixing or using thinners and solvents. You should also wear goggles or a face shield, respirator, rubber gloves, and coveralls during all paint touchup and paint spraying. Eating, drinking, or smoking should NOT be allowed in areas where paint or solvent is being used or stored.

Before you apply the primer, ensure that the surface has been cleaned, chemically treated, and prepared for spraying. Then, apply a cross coat of epoxy-polyamide primer and allow the coat to air dry for 1 hour. The total dry film thickness of primer should be 0.6 to 0.9 mil. If the temperature is below 70F, you should allow 2 to 3 hours for drying. Do not spray if the temperature is below 50F.