4. The Commission is empowered to adopt delegated acts in accordance with Article 31 amending Annex I and, where appropriate, Article 4 to:
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(a)
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amend the biodegradability criteria and corresponding test methods for surfactants or surfactants contained in detergents;
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(b)
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set out biodegradability criteria and corresponding test methods for intentionally added organic substances other than surfactants; or
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(c)
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set out exceptions authorising the limited use in detergents of specific organic substances that do not comply with the biodegradability criteria laid down in accordance with point (b), where duly justified.
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By 23 March 2029, the Commission shall adopt delegated acts setting out biodegradability criteria and test methods for films and polymers within films.
By 23 March 2031, the Commission shall adopt delegated acts setting out biodegradability criteria and test methods for organic substances intentionally added in concentration of at least 10 % w/w of the total mass of substances, excluding water, in detergents, other than surfactants, films and polymers within films.