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NIST Standard Reference Materials - http://ts.nist.gov/ts/htdocs/230/232/232.htm
SRM lists over 1300 individual reference materials produced by NIST, with carefully assigned values for chemical composition and physical properties. MSDS, prices in US$ and sale to registered users, dispatched from Gaithersburg, MD. |
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Resource Technology Corp. - http://www.rt-corp.com/
RTC offers proficiency testing schedules, and manufacturers natural-matrix samples and certified reference materials in Laramie, WY. |
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Brammer Standard Company, Inc. - http://www.brammerstandard.com/
Offers analytical reference materials for spectroscopy from around the world based in Houston, TX. |
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C.P.A. Chemical products for analysis - http://www.cpachem.com/
Offers standards and custom made, ready-to-use multi and mono-element solutions for AAS, ISP, MS and ILC, from Stara Zagora, Bulgaria. |
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Referenz Certified Reference Materials - http://referenz.atnz.net/
Offer steel, iron and spectrochemical RM, PDF downloads include catalog from BAS CRM distributor for New Zealand and Australia. |