ECHA issues guidelines for enforcing mixture classification based on bridging principles

By Scott Stephens, MPA

ECHA has issued a new guide for national enforcement authorities (NEAs), clarifying the tiered approach to mixtures classification under the CLP Regulation and strategies for reviewing duty holders’ classifications of hazardous mixtures. The document, which focuses on the “substantially similar mixtures” bridging principle and weight-of-evidence considerations, is a good indicator of where European authorities are likely focusing their limited resources in the context of CLP enforcement.

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