Now accepting results for G-Probe Round 25
The G-Probe 25 test materials for 2021 have been dispatched.
Note there will be only one round this year. Depending on your requirements, you should have received the phonolite glass, KPho-2G and / or the speleothem nano-pellet KCSp-1NP.
The Round 24 report for the basanite test material, BKWE-1G is available for download.
For enquiries about:
The test material and the G-Probe programme, contact Dieter Garbe-Schönberg: firstname.lastname@example.org
The delivery of test materials, contact Charles Gowing: email@example.com
The website and reporting results online, contact Peter Webb: firstname.lastname@example.org
Payments and subscriptions, contact Chris Jackson: email@example.com
The G-Probe proficiency testing programme is provided by the International Association of Geoanalysts (IAG): www.geoanalyst.org/
The IAG gratefully acknowledges the major role that Steve Wilson (USGS) has played in initiating, organising and developing the G-Probe programme over many years.