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As part of the IAG’s commitment to improving international
geoanalytical performance a plan is currently being developed to expand
the scope of its microanalytical testing program called G-probe. In
2009 the G-probe proficiency program will expand to two samples a year
offering IAG members an opportunity to test laboratory performance on a
diverse set of sample types. The program will combine its traditional
natural and synthetic geologic glasses with pressed powder samples
representative of polymetallic sulfides, oxides, corals, bones, and
organic materials. The program began its evaluation of pressed
powder suitability in March of 2008 by offering at no cost to IAG
members a pressed powder calcium carbonate material spiked with minor
and trace elements.
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