GB/T 32373-2025 is a special project standard for reverse osmosis (RO) membrane performance testing, which is suitable for the detection of various reverse osmosis (RO) membranes. The standard specifies the test principles of core performance such as desalination rate, water flux, and pollution resistance, and specifies the required instruments, operation steps, and result calculation and representation. It can unify the detection method and ensure the accuracy of the data. It provides a reliable technical basis for the production quality control, product selection, and performance evaluation of application scenarios such as reverse osmosis (RO) membrane.