
| Certificate # | Laboratory | Contact | City, State | Country | Phone | Fax | Comm. Code |
Field of Testing |
| 2122.01 | Resource Technology Corporation (RTC) | Christopher Rucinski | Laramie, WY | U.S.A. | 307 742 5452 | 307 745 7936 | C1 | Proficiency Testing Provider |
| 1539.01 | Environmental Resource Associates, Inc. | Curtis Wood | Arvada, CO | U.S.A. | 303 431 8454 | 303 421 0159 | C1 | Proficiency Testing Provider |
| 1785.01 | NYS DOH Environmental Laboratory Approval Program | Kenneth Jackson | Albany, NY | U.S.A. | 518-485-5570 | 518-485-5568 | C2 | Proficiency Testing Provider |
| 2427.01 | Wibby Environmental | Chuck Wibby | Golden, CO | U.S.A. | 303 940 0033 x201 | 303 940 0043 | C1 | Proficiency Testing Provider |
| 2429.01 | Absolute Standards, Inc. | Stephen Arpie | Hamden, CT | U.S.A. | 800 368 1131 | 800 410 2577 | C1 | Proficiency Testing Provider |
| 2430.01 | Analytical Products Group, Inc. | Thomas Coyner | Belpre, OH | U.S.A. | 740 423 4200 | 740 423 5588 | C1 | Proficiency Testing Provider |
| 2432.01 | NSI Solutions, Inc. | Mark Hammersla | Raleigh, NC | U.S.A. | 800 234 7837 | 919 957 7562 | C1 | Proficiency Testing Provider |
| 2532.01 | Microcheck, Inc. | Courtney Williamson | Northfield, VT | U.S.A. | 802 485 6600 x27 | 802 485 6100 | C1 | Proficiency Testing Provider |