The effective date of the replacement sections was deferred to December 1, 2025 when USP 661 will be replaced by USP 661.1 and USP 661.2. In the interim, testing under USP 661.1 and USP 661.2 is permitted by USP, and packaging systems conforming to these requirements prior to December 1, 2025 are considered to be in conformance with the USP–NF.  

Sandy Wagner Marketing Communications Manager PolyOne GLS Thermoplastic Elastomers +1 815-385-8500 sandy.wagner@avient.com Michelle Maniscalco Marketing Communications Manager, North America PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

DeLuca Vice President, Investor Relations PolyOne Corporation +1 440-930-1226 isaac.deluca@avient.com Rose Director, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

NOTE to EDITORS: EVs remain a novelty in the automotive space, accounting for less than 2% of global vehicle sales, but demand is increasing and expected to grow from slightly over 1 million vehicles in 2017 to 11 million vehicles by 2025, according to a recent report by BloombergNEF. Michelle Maniscalco Senior Manager, Marketing Communications PolyOne Corporation +1 440-930-1988 michelle.maniscalco@avient.com

Swanson Director, Investor Relations PolyOne Corporation +1 440-930-1018 eric.swanson@avient.com Media Contact: Kyle Rose Vice President, Corporate Communications PolyOne Corporation +1 440-930-3162 kyle.rose@avient.com

EPS(1) 1) 1)

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