Lab Fume Hood Certification

Regulatory Guidance / Test Methods:

We offer testing, certification, and maintenance of fume hoods. Our testing is performed to comply with the standards set by OSHA, ANSI, ASHRAE, and other regulatory bodies. Our reports are left on-site the same day.

Under OSHA Standards, fume hoods should be tested on an annual basis at a minimum to ensure products are working properly. New fume hoods should be tested prior to be used for the first time. Whenever changes are made to the equipment, a re-evaluation should be performed.

Primary Services

Additional Services

Our primary tests, including face velocity, airflow pattern, and room condition testing, demonstrate the units properly prevents chemical exposure for the equipment operator. We also repair equipment in the case that it is not functioning properly.

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.


25 years of company history


Highly trained technicians (average 10-year tenure)

Report Turnaround

We prioritize prompt delivery of reports.


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


Founder and employee-owned. Certified minority business enterprise

Our Locations

We are a regional service provider

As a regional service provider, Keystone provides testing and certification services across the midatlantic region and east coast.