Technology Services, National Voluntary Laboratory Accreditation Program, NIST Go to Technology Services Home Page Go to NIST Home Page Go to National Voluntary Laboratory Accreditation Program Home Page Go to Directory of Accredited Laboratories Go to Fields of Accreditation Go to Publications/Applications Go to Mutual Recognition Arrangements Go to Assessor Resources Contact National Voluntary Laboratory Accreditation Program

Directory of Accredited Laboratories


Chemical Calibration:
Certifiers of Spectrophotometric NTRMs


Through an arrangement with the NIST Biochemical Science Division, NVLAP offers accreditation to Certifiers of Spectrophotometric Filter NIST Traceable Reference Materials (NTRMs) under the Chemical Calibration field of the Calibration Laboratories Accreditation Program. An NTRM is a commercially produced reference material with a well-defined traceability linkage to existing NIST chemical measurement standards. Initially, accreditation is offered to certifiers of filters used for the measurement of light absorption in the visible spectrum.

This NVLAP program provides accreditation to those laboratories that can demonstrate their capabilities and competence as certifiers of spectrophotometric filter reference materials that meet the technical specifications and requirements as determined by the NIST Biochemical Science Division. Laboratories that have received NVLAP accreditation are permitted to distribute, with the NIST trademark designation NTRM (TM), filter reference materials that they have designed, prepared, characterized, and certified, and that meet all the technical specifications and other requirements set forth.

Technical requirements are contained in NIST Special Publication SP 260-140: Technical Specifications for Certification of Spectrophotometric NTRMs.

For more information see NIST Handbook 150-21: Chemical Calibration, Certifiers of Spectrophotometric NTRMs or contact NVLAP at (301) 975-4016.

Listed below are all laboratories accredited as of January 8, 2009.


Return to NVLAP Program Listing


Return to top of page NVLAP Home | Accredited Laboratories | Fields of Accreditation | Publications/Applications |
Mutual Recognition Arrangements | Assessor Resources | Contact NVLAP Return to top of page

For questions concerning the National Voluntary Laboratory Accreditation Program, contact us:

National Voluntary Laboratory Accreditation Program, Standards Services Division, NIST, 100 Bureau Drive, Stop 2140, Gaithersburg, MD 20899-2140
Phone: (301) 975-4016, Fax: (301) 926-2884, Email: NVLAP@nist.gov

Date created: July 26, 2002
Last Updated: January 8, 2009

Privacy Statement / Security Notice / Accessibility Statement | Disclaimer | FOIA