The NBS Standard Reference Materials program: an update

Trace Organic Analysis

“…A major goal of trace organic analysis at the National Bureau of Standards is the development of appropriate Standard Reference Materials (SRM's) for trace level organics in natural matrices. Cali (3,18) recently discussed SRM's and the requirements for certification of such materials. The definition of an SRM requires the use of one of three modes of measurement to assure the accuracy of the value(s) of the SRM property(ies).…”

NBS standard reference materials: update 1982

“…That is, they are the "true values" within the stated overall uncertainty limits. During the mid-1970s, considerable time and effort were invested in refining the technology of certification (8)(9)(10)(11)(12). These efforts have been continued into the 1980s with increased international participation (13)(14)(15).…”

NBS Standard Reference Materials: Update 1902

“…Seventy-seven reports in this series have been prepared during the past 18 years. The first 49 reports were mentioned in the 1976 ANALYTICAL Chemistry article (2). Now an additional 28 are categorized in Table II.…”