This international standard covers the accelerated aging test and requirements for electrochromic (EC) glazings. This test method is only applicable to chromogenic glazings that can be switched using an electrical stimulus from high to low transmission states and vice versa. The test method is not applicable to other chromogenic glazings, such as photochromic and thermochromic glazings which do not respond to electrical stimulus. The test method is applicable for any electrochromic glazing fabricated for vision glass (e.g. insulating glass unit, laminated glass) for use in buildings, such as doors, windows, skylights, and exterior wall systems, and exposed to solar radiation. The layers used for constructing the EC glazing and electrochromically changing the optical properties can be inorganic or organic materials.