How do I get certified reference material?
General steps required in production of a certified reference material typically include:
- Collection or synthesis of material.
- Sample preparation (including homogenization, stabilization, bottling etc.)
- Homogeneity testing.
- Stability assessment.
- Value assignment (“characterization” in ISO REMCO terms).
What is the difference between reference material and certified reference material?
Certified Reference Materials are considered to provide the highest level of accuracy, uncertainty and traceability to an SI unit of measurement. Reference Materials are a rung down from Certified Reference Materials though still must be supplied by an accredited Reference Material Producer.
What are the requirements of a reference material?
REQUIREMENTS OF REFERENCE MATERIALS
- Homogeneity. Homogeneity assures that the analysis of all subsamples of the reference material taken for measurement will produce the same analytical result within the stated measurement uncertainty.
- Similarity to the real sample.
- Accuracy, uncertainty, and traceability.
What is reference material used for?
Reference materials are an important tool in realising a number of aspects of measurement quality and are used for method validation, calibration, estimation of measurement uncertainty, training and for internal QC and external QA (proficiency testing) purposes.
Why do we use certified reference materials?
Certified reference materials (CRMs) are the preferred choice when performing XRF analysis, as they are accredited by international standards, ensuring that calibration is extremely precise. There is a lot of evidence to suggest CRMs have a high level of metrological traceability and reduce measurement uncertainty.
Why are certified reference materials important?
They provide a benchmark for analytical laboratories around the world to deliver accurate and comparable results. Testing laboratories use certified reference materials to calibrate measuring instruments, evaluate test procedures and for quality control purposes.
What are some examples of reference materials?
- Dictionaries (both language and topical)
- Bibliographies (lists of resources on a specific topic)
- Research handbooks and guides.
- Atlases and maps.
What is CRM in nabl?
Certified reference material (CRM) Reference material characterized by a metrological 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.
What are examples of reference materials?
What is CRM in ISO?
Certified Reference Materials (CRMs) are ‘controls’ or standards used to check the quality and traceability of products. A reference standard for a unit of measurement is an artifact that embodies the quantity of interest in a way that ties its value to the reference base for calibration.
What are the five reference materials?