What are reference materials 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.
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 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.
- Stability.
- Similarity to the real sample.
- Accuracy, uncertainty, and traceability.
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 examples of reference materials?
Reference Materials
- Dictionaries (both language and topical)
- Encyclopedias.
- Bibliographies (lists of resources on a specific topic)
- Research handbooks and guides.
- Catalogs.
- Atlases and maps.
- Directories.
What are the five major types of reference sources?
The most familiar types are dictionaries, encyclopedias, almanacs, biographical sources, directories, atlases, and bibliographies.
What is CRM in geology?
Certified reference material (CRM) for trace elements in quartz matrix is required to assess the performance of analytical methods in regards to their validation, calibration and for comparability of measurements between laboratories.
What are the types of reference materials?
What are the 5 reference materials?
They include dictionaries, encyclopedias, handbooks, atlases, almanacs, quotation books and style manuals.
What are the five reference materials?
What are the different types of source materials used as reference?
There are many types of reference sources, including dictionaries, encyclopedias, thesauri, directories, and almanacs. More broadly, reference sources can also include bibliographies, manuals, handbooks, atlases, and gazetteers. You can find these resources in print and online.
What is reference material in nabl?
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.