8.

Save in exceptional cases, duly warranted by the subject of the contract, those specifications may not refer to a specific make or source, or a particular process, or to trade marks, patents, types or a specific origin or production which would have the effect of favouring or eliminating certain products or economic operators. Where it is not possible to provide a sufficiently detailed and intelligible description of the subject of the contract, the reference shall be followed by the expression ‘or equivalent’.

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Source: EUR-Lex (Cellar) · retrieved 2026-11-04 · Text as adopted (Official Journal); later amendments are not incorporated in this text.