The Emerald Test

Fall 2017

Quantify Your Excellence

What is it?

The Emerald Test

Inter-Laboratory Comparison and Proficiency Test for Cannabis Testing Labs

The Emerald Test™ is an Inter-Laboratory Comparison and Proficiency Test (ILC/PT) program for cannabis testing labs. It brings to the cannabis industry a well-established standard for testing in the environmental, food, pharmaceutical, water, and petrochemical testing industries. Through the participation of labs around the world, the ILC/PT helps establish an industry benchmark for cannabis testing.

State regulatory agencies use proficiency testing programs for laboratory certification and accreditation. Accreditation ensures accurate testing for cannabis quality and safety by evaluating laboratory performance in the production of quality dependable data.

The Emerald Test™ is offered twice each year (though individual PT’s are always available).

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.  Test Samples are manufactured by an ISO 17043 accredited PT provider and require overnight shipping.  After receiving and testing the sample,  labs have a window in which to complete the test and submit their results through an electronic data portal. Data analysis provided by AOCS using software designed to meet requirements of ISO 13528:2015.

Labs will receive their individual results, and once analysis is complete, will receive the overall test results, so as to see how they performed in relation to their peers.  Individual lab data is held in strict confidentiality, however cumulative (anonymous) data of all participants will be used for a variety of analyses, and may be published in appropriate journals and/or websites.  Labs that perform within a specific tolerance will be awarded an Emerald Test Badge, and all participants will be listed on the Emerald Test website.

Fall 2017 Test


Enrollment for the Fall 2017 Test begins Monday, September 25. Purchasing any of the Emerald Tests automatically enrolls the lab in the program. All tests require Overnight Shipping, which is included in the price of the test. All tests will ship overnight.


The Fall 2017 Emerald Test offers a broad range of tests to meet a lab’s internal and regulatory needs.

potency test
The Potency Test is comprised of a 5-part cannabinoid matrix in 1mL of Acetonitrile. The test contains 0-1000 µg/mL of THC, THC-A, CBD, CBD-A, and CBN.
pesticide test

The Pesticides Test is comprised of the following 22 analytes in a matrix, with quantities ranging from 0-1000 ng/g:

  • Abamectin
  • Acequinocyl
  • Azoxystrobin
  • Bifenazate
  • Bifenthrin
  • Cyfluthrin
  • Daminozide
  • Etoxazole
  • Fenoxyocarb
  • Imazalil
  • Imadacloprid
  • Malathion
  • Myclobutanil
  • Paclobutrazole
  • Permethrin
  • Pyrethrins
  • Spinosad
  • Spiromesifen
  • Spirotretsamat
  • Thiamethoxam
  • Tebuconazole
  • Trifloxystrobin
residual solvents

The Residual Solvent Test is offered in 2 parts for stability.

Dimethylacetomide Hemp Oil Matrix
  • n-butane 0-1000μg/mL
  • iso-butane 0-1000μg/mL
  • benzene 0-1000μg/g
  • m-xylene 0-1000μg/g
  • p-xylene 0-1000μg/g
  • o-xylene 0-1000μg/g
  • toluene 0-1000μg/g
  • n-heptane 0-1000μg/g
  • n-hexane 0-1000μg/g
  • methanol 0-1000μg/g
  • ethanol 0-1000μg/g
microbial test panel 1
The Microbial Panel 1 Test is a 4 individual sample panel for quantitative determination of APC, Coliform/E.coli, Yeast/Mold, and Enterobacteriaceae. Each vial is to be hydrated with 10mL of Butterfield’s Buffer prior to analysis. Panel 1- Samples are prepared with natural hemp leaves and flowers inoculated with organisms of interest. Supplied in lypholized format for stability.
microbial panel 2
The Microbial Panel 2 Test is a 3 sample panel for qualitative identification of salmonella spp. in hemp. One of these samples is positive for salmonella. Two of the samples contain non-pathogenic, non-salmonella species.
 heavy metals test

The Heavy Metals Test is offered in 2 parts.

Part 1 in Solution:
for Cannabis Marijuana Heavy Metals
Part 2 in Hemp:
for Cannabis Heavy Metals
  • aresenic 0-50μg/mL
  • cadmium 0-25μg/mL
  • lead 0-25μg/mL
  • mercury 0-10μg/mL
  • aresenic 0-50μg/mL
  • cadmium 0-25μg/mL
  • lead 0-25μg/mL
  • mercury 0-10μg/mL

Submitting and reporting

Once labs complete the tests, the results will be submitted though an online portal. Labs will then receive an email with a link with embedded credentials to securely input their results (instructions included in your shipment). All submitted data will be transferred to AOCS (American Oil Chemists Society) for processing and analysis using ISO 13528:2015 software and standards for ILC/PTs.

The Badge

An Emerald Badge will be issued to top performing labs.  The criteria for selecting labs which receive an Emerald Badge is defined by the Emerald Test Advisory Panel.  In previous, single-analyte tests, the badge was awarded to labs which performed at or below =/-10% of the actual value of the test.  However, with multiple-analyte tests,  the calculations become more difficult.  The Advisory Panel has recommended the use of  a Z score of +/-1 to qualify for the badge.  This is a more robust and rational statistical evaluation that will be performed after all of the test data has been received.

Badges come with a one-year license, and can be used on the lab’s website, or for any digital or print marketing campaigns.  Display of the Emerald Test Badge demonstrates to its customers a lab’s proficiency and commitment to excellence.

Advisory Panel

The Emerald Test Advisory Panel defines the content of each test and the terms for data analysis as well as the criteria for receiving the Emerald Test Badge.  The 2017 advisory panelists are:

About Emerald Scientific

Emerald ScientificEmerald Scientific is the only reagent and equipment distribution company that exclusively serves the cannabis industry.  We provide quality reagents, supplies, and equipment to testing and extraction labs through our agreements with leading scientific product manufacturers, and we have developed our own kits and supplies to help improve efficiency and productivity in the testing labs. 

Encouraged by feedback from industry stakeholders and academics, we  developed the Emerald Test®, the first nationwide program for inter-laboratory comparison and proficiency testing (ILC/PT) specifically for the cannabis industry.     

We also hold the annual Emerald Conference – the first and biggest conference devoted exclusively to the Science of Cannabis.

We’d like to invite you to contact us anytime with any questions or comments, either about the ILC/PT, the Emerald Conference,  or about Emerald’s distribution business. Visit our website at, or call us  toll-free at 877-567-3598


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Contact Info

877-567-3598 ext. 709

San Luis Obispo, CA, USA