| Country | Company | Address | City | State | Zip Code | Phone | Web Site | Member Since |
| United States of America | Colorado Department of Public Health & Environment | 8100 E Lowry Blvd | Denber | CO | 80230 | (303) 692-3099 | | 10/25/2019 |
| United States of America | Southern Microbiological Services, LLC | 8000 Innovation Park Drive | Baton Rouge | LA | 70820 | 2258108390 | | 1/25/2016 |
| United States of America | BAL Laboratory, The Microbiology Division of Thielsch Engineering, Inc. | 185 Frances Ave. | Cranston | RI | 02910 | 617-571-3589 | http://www.ballaboratory.com | 4/9/2009 |
| United States of America | Massachusetts Dept. of Environmental Protection | 37 Shattuck Street | Lawrence | MA | 01843 | 978-242-1317 | | 3/29/2012 |
| United States of America | Chemical Inc | 13560 Colombard Court | Fontana | CA | 92337 | 951-681-9697 | | 4/8/2016 |
| United States of America | St. Louis VA Medical Center | 915 North Grand Blvd | St. Louis | MO | 63106 | 314-289-6353 | | 5/13/2014 |
| United States of America | Mycometrics, LLC. | 9 Deer Park Drive, Suite k-18 | Monmouth Junction | NJ | 08852 | 732-355-9018 | http://www.mycometrics.com | 3/20/2009 |
| United States of America | Florida Spectrum Environmental Services Inc. | 1460 W McNab Rd. | Fort Lauderdale | FL | 33309 | 9549786400 | http://www.flenviro.com | 8/14/2017 |
| United States of America | LabCor, Inc. | 7619 Sixth Avenue NW | Seattle | WA | 98117 | 206-781-0155 | http://www.labcor.net | 5/31/2013 |
| United States of America | UW Oshkosh Environmental Research & Innovation Center | 783 Pearl Ave. | Oshkosh | WI | 54901 | (920) 424-3148 | https://uwosh.edu/eric/ | 10/25/2019 |
| United States of America | EMSL ANALYTICAL INC | 29 NORTH PLAINS HWY UNIT# 4 | WALLINGFORD | CT | 06492 | 203-284-5948 | http://www.emsl.com | 2/24/2016 |
| United States of America | ATOKA, Inc. | 11701 Interstate 30, Bldg 1 - Suite 119 | Little Rock | AR | 72209 | 501-455-1700 | http://atokainc.com | 2/4/2014 |
| United States of America | EFFEX Analytical Services | 5965 Harrison Drive, Suite 8 | Las Vegas | NV | 89120 | 702-367-1187 | http://www.effexlab.com | 2/20/2014 |
| United States of America | Criterion Laboratories, Inc. | 400 Street Road | Bensalem | PA | 19020 | 215-244-1300 | http://www.criterionlabs.com | 3/24/2010 |
| United States of America | EMLAB P&K Phoenix | 1501 Wesst Knudsen Drive | Phoenix | AZ | 85027 | 623-298-1015 | http://www.emlab.com | 3/18/2009 |
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