2. Reference materials for metrology

A reference material is a material (pure or mixed) that is used for :

• equipment calibration ;

• metrological traceability and uncertainty assessment ;

• method development or validation ;

• as well as various quality control steps.

There are three families of reference materials:

• reference material (MR, not certified) ;

• certified reference material (CRM) ;

• quality control material (QCM).

In 2013, in the specific context of the development of nanoparticle metrology, a new class of test materials was proposed and called "representative test materials" (RTMs)...