This standard primarily describes the test method for determining the freeze-thaw cycle stability of polymer dispersions and synthetic rubber latices. The test evaluates the ability of samples to withstand freeze-thaw damage by simulating the process of freezing at low temperatures and thawing at room temperature. The results can be used to assess their stability during transportation and storage. This method is not applicable to natural rubber latex. The specialized testing instrument required for this test is primarily a programmable freeze-thaw cycle test chamber, which provides a specific low-temperature environment and enables cyclic control.