Cleanroom Certification Services in Cincinnati OH
Precision Environments has been designing, building, and certifying controlled environments since 1989. Headquartered in Cincinnati, we are one of the few firms in the country that handles the entire process under one roof, from initial concept through construction and certification.
Our cleanroom certification services are backed by A2LA ISO/IEC 17025:2017 accreditation and a performance guarantee that holds us accountable to the same standards we hold our work. Whether you’re certifying a newly constructed cleanroom or scheduling annual recertification, you’ll work with a team that knows controlled environments from the inside out.
What Cleanroom Certification Actually Means
Cleanroom certification is the formal process of verifying that a controlled environment performs according to its specified classification and regulatory requirements. It’s the documented proof that your environment is doing what it was built to do.
For most regulated industries, certification is tied directly to compliance. Without it, facilities risk failed audits, production shutdowns, and regulatory action. The governing standards for cleanroom certification include ISO 14644-1, IEST-RP-CC006-2, and Current Good Manufacturing Practices (cGMP). These frameworks define how testing is conducted, what results are acceptable, and what documentation must accompany the process.
A certified cleanroom tells regulators, clients, and your own operations team that the environment meets the cleanliness classification it claims. That assurance protects your product, your process, and your reputation.
How Precision Environments Approaches Cleanroom Certification
Certification at Precision Environments starts before the third-party cleanroom testing agency ever sets foot in the room. Our process begins with start-up and commissioning, where we use proprietary standard operating procedures and detailed inspection reports to confirm the environment is fully operational and performing to design specifications.
During this phase, we document the actual capacities and current draws for mechanical, electrical, and control systems. Nothing is assumed. Every component is verified against the original design before we move forward.
Once we’re satisfied the cleanroom installation is complete and operating to spec, third-party certification is conducted according to ISO 14644-1 and IEST-RP-CC006-2. That independent layer means the certification you receive is a verified, documented result from a qualified external agency, backed by our A2LA accreditation and satisfaction guarantee.
Cleanroom Certification Tests We Perform
Cleanroom testing for certification is a series of measurements that collectively confirm the environment is operating within its specified parameters. Precision Environments performs all of the following:
Airborne Particle Counts
The foundational test for ISO classification. Particle counters measure the concentration of airborne particles at specified locations throughout the room.
HEPA Filter Leak Test (Ambient Air or PSL)
Confirms that HEPA filters are properly installed and free of defects, leaks, or damage to the frame, seal, or framework.
HEPA Airflow Velocity
Measures airflow through HEPA filters to confirm supply rates meet design specifications.
Room Pressurization
Verifies the HVAC system maintains the correct pressure differential between the cleanroom and surrounding areas, preventing unfiltered air intrusion.
Air Exchange Rates
Calculates the volume of air cycling through the space per hour, confirming the ventilation system meets classification requirements.
Airflow Volume/Velocity Readings
Assesses total airflow supply into the cleanroom or clean zone to verify system performance.
Temperature/Relative Humidity
Confirms that temperature and moisture levels are within the HVAC control system's set points and consistent throughout the space.
Microbial Monitoring
Measures viable biological contamination within the environment, particularly relevant for pharmaceutical, life sciences, and medical device applications.
Lighting Level
Measures illumination throughout the cleanroom to verify conditions meet the facility's design specifications and industry standards.
Each test feeds into a complete picture of how the room is performing. When all measurements fall within specification, the result is a certified environment you can stand behind.
Cleanroom Recertification: Staying Compliant Over Time
Certification isn’t a one-time event. Cleanrooms drift, equipment ages, filters degrade, and process changes can affect environmental performance. Annual recertification is the standard practice for maintaining compliance and catching issues before they become costly problems.
Precision Environments’ recertification program covers all the same core parameters as initial certification: airborne particle counts, HEPA airflow velocity, room pressurization, air exchange rates, laminarity, lighting level, and temperature/relative humidity. Every recertification test is compared against your baseline to determine whether the environment remains in compliance.
This is also where our relationship with clients tends to deepen. We still service and recertify labs we built more than 20 years ago. Our team knows those environments, knows their history, and can identify changes that an outside tester might miss. That continuity has real value in regulated industries where documentation trails and institutional knowledge matter.
For facilities that want more than annual recertification, our cleanroom validation services provide a deeper level of documented performance verification tailored to your regulatory requirements.
A2LA Accreditation and ISO/IEC 17025: Why It Matters for Your Facility
Precision Environments holds A2LA accreditation (Certificate #2573.01) and is ISO/IEC 17025:2017 certified, the internationally recognized standard for testing and calibration laboratory competence.
What does that mean for you? It means our testing processes, equipment calibration, and documentation practices have been independently evaluated and approved against a rigorous global standard. It means the data we generate is traceable, defensible, and built to hold up under regulatory scrutiny.
For clients in pharmaceutical, medical device, and life sciences applications, this matters. When FDA inspectors or third-party auditors review your certification documentation, the credentials behind it carry weight. A2LA accreditation is a verified qualification, and it’s one more reason our clients trust us with their most sensitive environments.
Industries We Serve in Cincinnati and Beyond
Precision Environments provides cleanroom certification services to a wide range of industries. Our Cincinnati location serves as our home base, but our work spans nationally and across 15 countries.
Each of these sectors carries its own regulatory requirements, and our team brings the industry-specific knowledge to meet them precisely. If your industry requires a controlled environment, our certification team has almost certainly worked in it.
The Precision Environments Difference
Most cleanroom certification firms are testing companies. They come in, run their measurements, issue a report, and move on. Precision Environments is different because we built the room.
When our certification team walks into a Precision Environments cleanroom, they know the design intent, the mechanical systems, the control logic, and the construction details. That context produces better, faster, and more meaningful certification results. When something looks off, we don’t just flag it. We can diagnose it.
For clients working with existing cleanrooms built by other contractors, we bring the same depth of analysis. With 1,000+ controlled environments in our portfolio and 35+ years of experience, there are very few scenarios we haven’t seen.
Our certification services carry a satisfaction guarantee, and 80% of our work comes from repeat clients. Those numbers reflect something that credentials alone can’t capture: a track record of doing what we say we’ll do.
Cleanroom Certification Services Near Me: Get Started With a Consultation
Whether you’re approaching certification on a new build or scheduling recertification for an existing facility, Precision Environments is ready to help. Our team meets clients wherever they are in the process, with the technical depth and accredited credentials to get the job done right.
Frequently Asked Questions
How often should a cleanroom be recertified?
Annual recertification is the standard recommendation for most cleanroom classifications and industries. Facilities operating under stricter regulatory oversight, such as pharmaceutical or medical device manufacturers, may require more frequent testing based on their specific compliance requirements.
What is the difference between cleanroom certification and cleanroom validation?
Certification confirms that a cleanroom meets its specified ISO classification and environmental performance parameters at the time of testing. Validation goes further by providing documented evidence that the environment consistently performs within defined limits for a specific process or regulatory framework. Both are important, and Precision Environments offers both services.
Does Precision Environments certify cleanrooms it didn't build?
Yes. Our certification and recertification services are available for any cleanroom, regardless of who designed or constructed it. Our team has the technical experience to assess, test, and certify controlled environments across all common ISO classifications.