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NTRM® Producer Information
An NTRM® (NIST Traceable Reference Material) is a commercially produced reference material with a well-defined traceability linkage to existing NIST standards. This traceability linkage is established via criteria and protocols defined by NIST which include the NIST analysis of at least 10% of a Gas Mixture NTRM® batch. Commercial producers may affix the NTRM® certification mark provided by NIST to materials produced according to these criteria and protocols. A NIST NTRM® may be recognized by a regulatory authority as being equivalent to a Certified Reference Material (CRM). For additional information, see Guenther, F.R., Dorko, W.D., Miller, W.R., Rhoderick, G.C. The NIST NTRM® Program for Gas Standards, NIST Spec. Publ. 260-126 (1997). Contact can be made at email@example.com.
Given below in alphabetical order is a listing of companies that have produced Gas Mixture NTRMs in the recent past.
Airgas Specialty Gases
Air Liquide America Corp.
Linde Gas North America LLC