The accuracy of an analytical measurement is defined as the closeness of agreement between a test or measurement result and the true value. It usually requires calibration of the analytical method with a known standard. This is often done with standards of several concentrations to make a calibration or working curve.
The highest degree of confidence is achieved with Certified Reference Materials (CRMs)
, which are characterized by a metrologically valid procedure for one or more specified properties, accompanied by a certificate that provides the value of the specified property, its associated uncertainty, and a statement of metrological traceability, according to the definition stated in ISO Guide 30.
All the standards from our catalogue have been developed following the guidelines of ISO Guides Series 30
. Therefore those standards included in CRMs Section have their concentrations certified. The analytical method used for quantification is 1H-qNMR
; and assignment of the purity is based on combination of measurements from 1H-qNMR and liquid chromatography coupled to ESI-MS/MS
We are continually adding CRM products to our available catalogue menu. If you are unable to locate a desired product, have any suggestion or require further information, please contact us at firstname.lastname@example.org
Approval catalogue date: March 2017
Approved by: Laboratory Director