V primeru, da naročnik izkoristi možnost sklicevanja na specifikacije iz odstavka 3(a), ne sme zavrniti ponudbe z obrazložitvijo, da proizvodi in storitve, ki so ponujeni, niso skladni s tehničnimi specifikacijami, na katere se sklicuje, če ponudnik v svoji ponudbi s katerimi koli ustreznimi sredstvi in na način, ki je sprejemljiv za naročnika, dokaže, da rešitve, ki jih predlaga, na enak način izpolnjujejo zahteve, določene v tehničnih specifikacijah.
Where a contracting authority makes use of the option of referring to the specifications mentioned in paragraph 3(a), it cannot reject a tender on the grounds that the products and services tendered for do not comply with the specifications to which it has referred, once the tenderer proves in his tender to the satisfaction of the contracting authority, by whatever appropriate means, that the solutions which he proposes satisfy in an equivalent manner the requirements defined by the technical specifications.