This standard provides a method for evaluating the ability of latex paints to form a uniform film at low temperatures. This test helps Coating formulators determine whether Coatings form a good film at low temperatures, thereby optimizing coalescing solvent levels in formulations. By comparing with films at room temperature, this method can effectively rank the low temperature performance of different Coatings, provide a judgment of whether they are qualified or not, and help ensure the Reliability of Coatings in various climate conditions.