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 February 10, 2012.
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