Geochemical Reference Materials
By Geology, Geophysics, and Geochemistry Science Center
2006 (approx.)
Detailed Description
USGS provides geochemical reference materials for use by scientists in all areas of earth science. Reference materials are routinely used in the calibration of analytical instrumentation, development of new extraction methodologies, and as quality control samples which monitor laboratory performance. For more information on this program please see our Fact Sheet.
Sources/Usage
Public Domain.