The American Chemistry Council’s (ACC) Product Approval Protocol Task Group (PAPTG) reached consensus to accept the ISB Viscosity Test into the Product Approval Code of Practice. On the effective date of this Code Bulletin, an updated Edition of the Code of Practice will be posted online.
Code Bulletin C-68 - Acceptance of the ISB Viscosity Test into the Product Approval Protocol Code of Practice – April 2025 Edition
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