It is a document providing requirements, specifications, guidelines or characteristics that can be used to ensure that materials, products, processes and services are fit for purpose. Standards
help to ensure that products and services are safe, reliable and of good quality.
A harmonised standard is a European standard developed and adopted by one or more European standards organisations following a standardisation request from the European Commission in support of European legislation. The references to harmonised standards are published in the Official Journal of the EU. In each harmonised standard, an annex explains the relationship between its requirements and the requirements of EU legislation. Compliance with harmonised standards provides presumed conformity with the essential requirements of the corresponding European legislation (regulation or directive). Manufacturers are always free to choose another form of proof that they meet the requirements, but the use of harmonised standards helps SMEs to satisfy the requirements of EU legislation.
Dowloand full guide below.