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Beamex / Dictionary / Accreditation

Scope of ac­cred­it­a­tion

For an accredited calibration or testing laboratory, the scope is a documented list of calibration or testing fields, parameters, specific meas­ure­ments, or cal­ib­ra­tions and their best measurement, uncertainty.

Level of confidence

Defines an interval about the measurement result that encompasses a large fraction p of the probability dis­tri­bu­tion char­ac­ter­ized by that result and its combined standard uncertainty, and p is the coverage probability or level of confidence of the interval

In­ter­na­tion­al Or­gan­iz­a­tion for Stand­ard­iz­a­tion (ISO)

An in­ter­na­tion­al non­gov­ern­ment­al or­gan­iz­a­tion chartered by the United Nations in 1947, with headquar­ters in Geneva, Switzerland.


Acceptance of the competence of other national metrology institutes (NMI), ac­cred­it­a­tion bodies, and/or accredited or­gan­iz­a­tions in other countries as being essentially equal to the NMI, ac­cred­it­a­tion body, and/or accredited or­gan­iz­a­tions within the host country. 


Non­ful­fill­ment of conditions and/or criteria for ac­cred­it­a­tion, sometimes referred to as a non­con­form­ance.


For a laboratory, the demon­strated ability to perform the tests or cal­ib­ra­tions within the ac­cred­it­a­tion scope and to meet other criteria established by the ac­cred­it­a­tion body.

Ac­cred­it­a­tion criteria

Set of re­quire­ments used by an accrediting body that a laboratory must meet in order to be accredited

Ac­cred­it­a­tion certificate

Document issued by an ac­cred­it­a­tion body to a laboratory that has met the conditions and criteria for ac­cred­it­a­tion

Ac­cred­it­a­tion body

An or­gan­iz­a­tion that conducts laboratory ac­cred­it­a­tion evaluations in conformance to ISO Guide 58

Ac­cred­it­a­tion (of a laboratory)

Formal recognition by an ac­cred­it­a­tion body that a calibration or testing laboratory is able to competently perform the cal­ib­ra­tions or tests listed in the ac­cred­it­a­tion scope document