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NIST Standard Reference Materials
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.
LGC Reference Materials
LGC produces and supplies high quality certified reference materials and biomaterials throughout Europe on behalf of ATCC, USP, EP, NIST and BCR.
Thorn Smith Laboratories
Quantitative and qualitative unknowns, student reference standards, answer sheets, from Beulah, MI.
Resource Technology Corp.
RTC offers proficiency testing schedules, and manufacturers natural-matrix samples and certified reference materials in Laramie, WY.
C.P.A. Chemical products for analysis
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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