ASTM E1333-22 "Standard Test Method for Determining Air Formaldehyde Concentration and Wood Product Emission Rates Using Large Containers" standard provides a test method for determining formaldehyde release from wood products and formaldehyde concentration in air. The method simulates the use conditions of wood products in the real environment by using large containers (large environment test chambers), and measures their formaldehyde release rate and formaldehyde concentration in the air. The standard details the experimental design, sample preparation, operating procedures, and methods for analyzing results to ensure the accuracy and conformity of the testing process. This test method is widely used in the wood products industry, especially in furniture, building materials, etc., to evaluate the formaldehyde emission performance of products and to help manufacturers comply with environmental and health regulations.