||Two New Gas Standards Programs at the National Institute of Standards and Technology.
Mitchell, W. J. ;
May, W. E. ;
||Environmental Protection Agency, Research Triangle Park, NC. Atmospheric Research and Exposure Assessment Lab.;National Inst. of Standards and Technology (CSTL), Gaithersburg, MD. Organic Analytical Research Div.
Air pollution monitors ;
Performance evaluation ;
US EPA ;
NIST Traceable Reference Materials ;
Research Gas Mixture ;
Certified Reference Materials Program ;
Standard reference materials
||Most EPA libraries have a fiche copy filed under the call number shown. Check with individual libraries about paper copy.
The EPA/NIST certified reference materials (CRM) program is being terminated and replaced with two new ones: the NIST Traceable Reference Materials (NTRM) and the Research Gas Mixture (RGM) programs. These new programs are being implemented to provide NIST traceability to a wider number of gas mixtures. The NTRM program will differ from the CRM program in two significant ways: Candidate gas mixtures will not have to be identical to a NIST Standard Reference Material (SRM), and the producer of the NTRM rather than EPA will pay NIST to check the concentration of the gas mixture. In the RGM program, NIST will enter into agreements with either governmental, commercial or private organizations to produce gas mixtures for which there are no SRMs or which lie outside the concentration range of existing SRMs. The details of these programs are presented in the paper.