M. Thompson et al., GEOPT2 - INTERNATIONAL PROFICIENCY TEST FOR ANALYTICAL GEOCHEMISTRY LABORATORIES - REPORT ON ROUND-2, Geostandards newsletter, 22(1), 1998, pp. 127-156
Results from sixty laboratories participating in GeoPT2, the internati
onal proficiency testing programme for analytical geochemistry laborat
ories, are reported. Compared with 71.3% in the last round, 74.6% of t
he reported data complied with the laboratories' selected fitness for
purpose criteria.