How it works

The Emerald Test™ takes place in the Spring and Fall of each year, with enrollment open for a set period of time. The components of each test are determined by the Emerald Test Advisory Panel. When possible, proficiency test samples are manufactured by an ISO 17043 accredited PT provider and require overnight shipping. After receiving and testing the sample, labs have a specified time period to complete the test(s) and submit their results. Results are submitted through an electronic data portal. Data analysis is provided by American Oil Chemists Society (AOCS) with software designed to meet the requirements of ISO 13528:2015.

Labs will receive their individual results with the overall test results so they can evaluate their performance in relation to their peers. Individual lab data is confidential; however cumulative (anonymous) data of all laboratory participants is used for a variety of analyses and may be published in appropriate journals and/or websites. Labs that perform within a specific tolerance are awarded Emerald Test Badges. All participants will be listed on this site.

A signed release of information from the lab is required to make test results available to regulatory agencies.