Cleanroom Testing & Certification in Greenville, NC
Clean Environment Testing in Greenville, NC
Keystone brings over 25 years of expertise in testing and certifying controlled environments to Greenville, NC. From cleanrooms and biosafety cabinets to fume hoods and isolators, we ensure compliance with the strictest FDA, CDC, and USP standards. Our highly skilled technicians, averaging 10 years of experience, provide precise results with quick turnaround times—same-day for cabinets and two weeks for cleanrooms. Whether you need routine certification, emergency service, or expert advice, make Keystone your trusted partner. Schedule your certification today and experience the Keystone commitment to safety and excellence.
Our Services In Greenville, NC
Cleanroom testing / certification
We test and certify all types of cleanrooms to ISO 14644-1 standards. From small to large, we have you covered.
USP 797 testing
We offer USP compliance testing, helping clients deliver safe, effective medication.
Fume Hood Testing
We offer a comprehensive array of fume hood tests such as velocity and smoke pattern testing.
Isolator Certification
We can certify all types of isolators and gloveboxes.
Laminar Flow Testing
We offer testing/certification of laminar flow units / clean benches.
repairs
We can repair fume hoods, biosafety cabinets, HEPA filters, and other pieces of critical equipment.
Advisory services
We offer cleanroom design reviews, operational performance audits, and other advisory services.
Biosafety cabinet certification
We test cabinets in accordance with NSF/ANSI 49, OSHA, NIH/CDC and manufacturer’s specifications.
vivarium testing services
We offer comprehensive testing, certification and maintenance of laboratory animal condos, cage changing stations and other HEPA filtered, ventilated enclosures.
Microbiological Laboratory Services
Our state of the art ISO microbiology labs can provide end-to-end management of your microbiological samples.

Regional Service Provider
Serving North Carolina and Beyond

ABout
Why choose Keystone
Keystone has tested and certified controlled environments for over 25 years. When we started Keystone we serviced Virginia and the surrounding areas. Today we service the east coast. Our team has over 100 collective years of experience in the industry, serving over 200 pharmaceutical, university, research, and advanced manufacturing clients.
We test, certify, and service all controlled environments, including cleanrooms, biosafety cabinets, fume hoods, and isolators. We provide biosafety cabinets, cleanbenches and fume hood reports the same-day, and turnaround electronic cleanroom reports in two weeks. For any emergency, we can get a technician to your site quickly.
We are proudly 100% founder and employee owned. Keystone is a certified minority business enterprise.

Experience
25 years of company history

Quality
Highly trained technicians (average 10-year tenure)

Report Turnaround
2 weeks for cleanrooms, same-day for hoods, BSCs, etc

Urgency
We take emergency calls seriously. We can get technicians on-site quickly

People
Founder and employee-owned. Certified minority business enterprise
Additional Cleanroom Services in Greenville, NC
We offer additional services to help our customers create and maintain the best controlled environments.
Cleanroom Design Review
We can work alongside your cleanroom contractor to make sure that your new cleanroom is designed properly. We provide independent, third-party reviews of preliminary cleanroom designs. We can also do the first testing/certification once the cleanroom is constructed.
Cleanroom operational performance audits
We perform operational performance audits to help identify areas for improvement, ensure ongoing compliance, and maintain integrity of the cleanroom environment.
Coaching on internal SOPs
Keystone can work alongside your internal team to make sure your internal SOP adhere to regulatory, industry, and safety standards. We perform, independent, third-party reviews enabling our customers to ensure they’re operating at the highest standard.