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. Proficiency test samples are manufactured by an ISO/IEC 17043 accredited PT provider with overnight shipping where available. After receiving the PT 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 the sample manufacturer with software designed to meet the requirements of ISO 13528:2015.

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Labs will receive their individual PT results as well as the ILC/PT 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 for each round will be listed on this site.

Enrollment in the Emerald Test signifies understanding and permission for individual lab results to be provided to Emerald Test personnel for identification of Emerald Badge award recipients.

A signed release of information from the lab is provided to make test results available to regulatory agencies and accreditation bodies.

Important Information for Our Customers

To Our Friends and Customers,

We recognize that these are unsettling times and we want you to know that the safety and health of our global community, including our valued customers and dedicated vendors, is of the utmost importance to us.

During this time, our commitment to you as a valued customer will continue to remain strong and steady. Our e-commerce lights will also remain on while our team across the country works virtually and practices strict social distancing.
We are in close contact with our vendors to ensure that customers like you are able to access all of our products and continue business as usual. I can say with confidence that we are well positioned in this regard due to the broad diversity among the vendors that we represent.
In an effort to help facilitate current strategic orders, we have stocked our warehouse with MilliporeSigma mobile phase solvents. In our experience, mobile phase solvents are an example of products that are imperative to operations and are often ordered with short lead time relative to operational needs. We are prepared to ship these products immediately and have also applied a discount.

Nothing is more important than your health and safety, and the need to protect those most vulnerable to the coronavirus. Please take care of yourselves and others.

Ken Snoke
Founder, Emerald Scientific