This code sets out recommended practice for exposure of plastics commercial products to weather in Australia. It also covers exposure of samples of commercial products under certain defined conditions but is not intended to cover exposure of samples for the provision of design data or other research and development factors. It covers the methods and procedures by which the products are to be exposed and defines the climatic conditions under which samples would need to be exposed to obtain compliance with this code. Methods of reporting and interpreting the results are also recommended.