Warning. Technical requirements given in EU legislation are mandatory, while the use of harmonised standards is usually voluntary.

What does it mean for a standard to be harmonized?

A harmonised standard is a European standard developed by a recognised European Standards Organisation: CEN, CENELEC, or ETSI. ... Manufacturers, other economic operators, or conformity assessment bodies can use harmonised standards to demonstrate that products, services, or processes comply with relevant EU legislation.

Are ISO standards harmonized?

An ISO standard is a standard developed by the standardisation institute ISO. An EN standard is named as such, when a standard has been harmonised by the European Commission. ... From then on the standard is harmonised, meaning that the Member States need to adopt this standards and withdraw any conflicting standards.