This document specifies the requirements, test methods, inspection rules, and marking, Encasement, transport and storage methods for bipolar membranes. Applicable to the research and development, production, inspection and use of bipolar membrane products. A number of standard documents are cited, including standards on chemical reagents, Encasement membranes, Encasement boxes, and terminology standards related to membrane separation technology. The Terms and Definitions section defines terms such as Bipolar Membrane, Ion Exchange capacity, Burst strength, etc., to ensure conformity and accuracy of terms in the document.