How harmonised standards work as a route to showing a product meets the rules

A harmonised standard is a European standard that has been recognised as a route to showing a product meets certain legal requirements. For a high chair, following such a standard does not, on its own, make the chair safe in every use, but it does give the manufacturer a structured way to demonstrate that the chair's stability, strength, and small parts have been considered in a recognised manner.

The key word is route, not guarantee. A harmonised standard provides a presumption, in general terms, that a product following it meets the requirements it covers, provided the standard is followed correctly and completely for that product. A partial following, or a following of a standard that does not cover the chair type, does not provide that route, however confidently it is cited.

Scope checking comes first. A standard for high chairs may cover a certain age range, a certain chair type, or a certain construction, and a chair outside that scope is not covered, even if it looks similar. The manufacturer should read the scope, compare it with the chair's intended users, materials, and design, and record the comparison, rather than citing the standard because a competitor cited it.

Version checking comes second. Standards are updated, and an old version may no longer be the recognised route, while a new version may add or change tests. The manufacturer should note the version cited, the date it was checked, and the source of that information, so a later reviewer can tell whether the citation is still current.

Illustration: a manufacturer cites a standard for 40 high chairs and imagines that 20 of them, in round illustration terms, differ in a feature the standard does not cover, such as a tray that detaches in a new way. Those figures, as presented in How harmonised standards work as a route to showing a product meets the rules, are invented, not measured. They show why citing a standard is not enough: the chair's features must be compared, one by one, with the standard's scope, and any feature outside the scope needs its own assessment.

The manufacturer should therefore list chair features beside standard clauses, marking each feature as covered, partially covered, or not covered, and should assess uncovered features separately. That mapping turns a citation into evidence, rather than a slogan.

Citing a standard in a listing or a declaration should be precise. The citation should name the standard, its version, and the product it was applied to, without implying that the whole product was tested to every clause if only part was. A vague citation, such as saying a chair meets a standard, without saying which version or which features, cannot be checked and should not be used.

• Check the standard scope against the chair type, age range, and construction.
• Note the version cited and the date it was checked for currency.
• Map each chair feature to a covered, partial, or uncovered status.
• Assess uncovered features separately, with reasons recorded.

Harmonised standards are often misused by citation without testing. A manufacturer who cites a standard but never tests the chair against it has not followed the standard in any meaningful sense, and the citation will not withstand scrutiny. Following a standard means performing its tests, or commissioning them, and filing the results, not merely naming the standard in a document.

Another misuse is to cite a standard for a different product type because its title sounds similar. A standard for a different chair, a different age group, or a different material may share words with the high chair standard, but its tests and criteria may differ. Title similarity is not scope coverage.

Close by filing the scope check, the version note, the feature map, and the test results together, with a short summary of what the standard covers for this chair and what remains assessed separately. That file supports an honest citation and an honest listing.

Revisit the citation when the standard is updated, when the chair design changes, or when a new feature is added. Each revisit should recheck scope and version, because a citation that was correct last year may no longer describe the chair being sold today.