METROLOGY
is the science of measurement.
Confidence in national measurement is assured by a national metrology institute (NMI) when it becomes signatory to the Mutual Recognition Arrangement of the International Committee of Weights and Measures (CIPM MRA).
STANDARDIZATION
provides, for common and repeated use, rules, guidelines or characteristics for activities or their results, aimed at the achievement of the optimum degree of order in a given context.
Standardization is usually the responsibility of a National Standards Body (NSB) that may represent the country’s interests within organizations such as ISO (the International Organization for Standardization).
ACCREDITATION
is the process by which an authoritative body gives formal recognition that a body or person is competent to carry out specific tasks.
Accreditation is often the responsibility of a national accreditation body (NAB) that may seek recognition of its accreditations within the frameworks of the International Accreditation Forum (IAF) and International Laboratory Accreditation Forum (ILAC).
