Biocides: efficacy - assessment and evaluation

Volume 2: Parts B and C

Technical advice on how to perform the hazard and exposure assessment and risk characterisation for biocidal active substances and products when making an application.

Applies to:
Northern Ireland, Great Britain (although written for the EU market, businesses marketing biocides in GB should continue to use this guidance until GB market specific guidance is published)
Published by:
European Chemicals Agency (ECHA)
February 2017
Last updated:
February 2022 (version 4.1)

Guidance publications


This scientific guidance provides technical scientific advice on how to assess and evaluate the efficacy to establish the benefit arising from the use of biocidal products and to prove that it is sufficiently effective (Parts B and C).

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