sec_4_1_2_3__para__6

The recourse to harmonised standards referenced in the OJEU and which give a presumption of conformity remains voluntary (191). Manufacturers can choose whether or not to apply such harmonised standards or parts thereof. However, if manufacturers choose not to apply a harmonised standard, they must demonstrate that the products are in conformity with essential requirements by the use of other means of their own choice (for example by means of any existing technical specifications including all other available standards). If the manufacturer applies only a part of a harmonised standard or the harmonised standard does not cover entirely all relevant essential requirements, the presumption of conformity exists only to the extent the harmonised standard corresponds to the essential requirements. For that reason it is necessary that each harmonised standard contains clear and correct information on legal (essential) requirements covered.

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Source: EUR-Lex (Cellar) · retrieved 2026-09-25 · Text as adopted (Official Journal); later amendments are not incorporated in this text.