
| Certificate # | Laboratory | Contact | City, State | Country | Phone | Fax | Comm. Code |
Field of Testing |
| 656.02 | Brammer Standard Company, Inc. | G.R. Brammer | Houston, TX | U.S.A. | 281 440 9396 | 281 440 4432 | C1 | Reference Materials Producer |
| 883.02 | Inorganic Ventures | Paul Gaines | Lakewood, NJ | U.S.A. | 732 901 1900 | 732 901 1903 | C1 | Reference Materials Producer |
| 2495.01 | SPEX Certiprep Inc. - Protocol Analytical LLC | Suzanne Lepore | Metuchen, NJ | U.S.A. | 732 549 7144 ext 419 | 732 494 1747 | C2 | Reference Materials Producer |
| 1750.02 | Control Company | Wallace Berry | Houston, TX | U.S.A. | 281 482 1714 | 281 482 9448 | C1 | Reference Materials Producer |
| 2644.01 | ATCC | Rosemarie Pruden | Manassas, VA | USA | 703-365-2806 | 703-365-2730 | C1 | Reference Materials Producer |