NSF Product and Service Listings
These NSF Official Listings are current as of Monday, November 2, 2026 at 12:15 a.m. Eastern Time. Please contact NSF to confirm the status of any Listing, report errors, or make suggestions.
Alert: NSF is concerned about fraudulent downloading and manipulation of website text. Always confirm this information by clicking on the below link for the most accurate information: http://info.nsf.org/Certified/Biosafety-Certifier/Listings.asp?CertName=markis&
Biosafety Cabinet Field Certifiers - Enhanced Accreditation Program
The listed individuals have successfully completed both written and practical examinations, demonstrating the ability to perform the tests listed in annex F of NSF/ANSI 49.
| United States | Additional Service Locations: |
| Markis Snodgrass Technical Safety Services (TSS) 1360 Union Hill Road Suite 4G Alpharetta, GA 30004 United States 404-806-0927 |
United States, International |
|
Certificate Number: C0077634-05 Date of Initial Accreditation: 08/17/11 Expiration Date: 08/17/27 |
|
Processing time was 0 seconds

