Suspended Certificates
| Certificate# | Organization | Location | Effective Date | Field of Testing |
| 3770.01 | Houston Anodes International Laboratory, LLC | Houston, Texas, United States | 05/28/2019 | Chemical |
| 2671.01 | RTI International | Research Triangle Park, North Carolina, United States | 10/20/2017 | ISO/IEC 17043:2010 |