Nist PM2.5 Standard (SRM 1648a) from the United States

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Nist PM2.5 Standard (SRM 1648a) from the United States

SRM 1648a - Urban Particulate Matter

Issuing unit:National Institute of Standards and Technology (NIST, USA)

Related experiment: Effects of PM2.5 * exposure induction on epithelial mesenchymal transition behavior of human bronchial epithelial cells

This standard reference material (SRM) is atmospheric particulate matter collected in urban areas, primarily used as a quality control material and for evaluating inorganic analysis methods and determining selected polycyclic aromatic hydrocarbons (PAHs), nitro substituted polycyclic aromatic hydrocarbons (nitro PAHs) in atmospheric particulate matter and similar matrices, polychlorinated biphenyls (PCBs) analogues, and chlorinated pesticides.

NIST supports accurate and compatible measurements by certifying over 1300 standard reference materials and providing their distinctive composition or characteristics, or a combination of both. These materials are used as part of the overall quality assurance plan for instrument calibration on a unit by unit basis to verify the accuracy of specific measurements and support the development of new measurement methods.

Industry, academia, and government all use NIST SRM to facilitate trade and promote research and development. At present, NIST SRM can be used in fields such as industrial material production and analysis, environmental analysis, health measurement, and basic measurements in science and metrology. NIST SRM is also a mechanism in the United States that supports measurement traceability.

If applicable, each NIST standard reference material comes with an analysis certificate and material safety data sheet. In addition, NIST has published numerous articles and practice guidelines describing the development, analysis, and use of SRM.

The SRM program references many definitions related to the production, certification, and use of its SRM and RM. Some of the definitions used for SRM are derived from guidelines and standards for reference materials and measurements, and the SRM program has developed some definitions to describe the activities of NIST operations.

NTRM (NIST Traceable Reference Material) is a commercially produced reference material with clear traceability links to existing NIST standards. Traceability links are established through standards and protocols defined by NIST. Commercial reference material manufacturers can affix NTRM trademarks on materials produced according to these standards and protocols.