The ZDHC Programme will review the methods and business practices of third-party certification standards and testing laboratories that apply to the ZDHC Programme for acceptance by ZDHC as reviewers of chemical formulation information to determine whether that formulation is in conformance with the ZDHC Manufacturing Restricted Substances List (MRSL). The certifications issued by those bodies for chemical formulations will be considered indicators that the formulation will meet the requirements of the ZDHC MRSL.

Certification standards and testing laboratories that meet the requirements outlined in the ZDHC MRSL Conformance Guidance will be "Accepted" by ZDHC as providing an indication of ZDHC MRSL conformance.