Suppliers should review their chemical inventory lists, including current stock quantities, monthly consumption and expiry dates.

They should contact chemical suppliers or formulators to identify which formulations:

• Will remain ZDHC MRSL conformant and can be recertified against V4.0 without changing their composition.
• Will become ZDHC MRSL non-conformant and require reformulation or replacement with a V4.0 conformant alternative.
• Have an uncertain V4.0 conformance status and require further clarification.

Suppliers should also identify substances subject to Emission and Exposure Control (EC*) provisions.