ASTM D5116-17 "Standard Guidelines for the Determination of Organic Emissions from Indoor Materials/Products in Small Environment Chambers" provides operating guidelines for the use of small environment chambers to test indoor materials and products for organic emissions. The standard details experimental design, sample preparation, operating conditions of environment chambers, and determination methods for organic emissions. It is designed to help researchers and manufacturers accurately evaluate the release of organic chemicals from different materials and products in indoor environments. The guidelines are applicable to various interior decoration materials, furniture, construction products, etc., and are especially important for the emission detection of harmful substances such as vocs (VOCs). By implementing this standard, the safety and environmental performance of products can be ensured, and relevant health and environment regulations can be met.