GB/T 19941.1 - 2019 High performance liquid chroma-tography, HPLC is used to determine the formaldehyde content of leather and fur. It provides detailed instructions on how to prepare representative samples to ensure that the test samples meet the requirements. Clarify the technical parameters and operating specifications of High Performance Liquid Chromatograph and other equipment, and strictly control the key links such as mobile phase carrier gas selection and sample volume setting. According to this standard, the formaldehyde content in leather and fur can be accurately determined, providing accurate data support for mass supervision of the industry, helping to promote the development of leather and fur products in a green and safe direction, and protecting consumers' health rights and interests.