Airflow and Particle Testing Services In The Triangle

Triangle Cleanroom Pros provides certified airflow testing, velocity measurements, pressure differential verification and particle counting services for controlled environments across Raleigh, Durham, Chapel Hill, Cary, Apex and Morrisville. Our technicians use calibrated instruments and ISO 14644 testing methods to confirm that your cleanroom’s airflow patterns, filtration performance and airborne particle levels meet strict regulatory and industry standards.

Whether you need annual testing, post-repair verification, contamination troubleshooting or support before an upcoming audit, we deliver fast, accurate, fully documented results with clear pass/fail reporting.

Airflow Velocity & Directional Flow Testing

We measure airflow velocity across hoods, HEPA outlets and critical work areas to confirm proper laminar flow and uniform air distribution. Directional airflow tests ensure air consistently moves from clean zones to less clean areas, maintaining contamination control.

ISO 14644 Particle Counting & Classification

Using calibrated particle counters, we test 0.3μm, 0.5μm and 5.0μm particle sizes to determine your cleanroom’s ISO classification. Measurements are taken at required sampling points and compared against ISO 14644 limits to verify compliance and cleanliness levels.

Pressure Differential Monitoring

Proper pressure relationships are essential to prevent contamination migration. We test positive and negative pressure rooms, anterooms and critical spaces to ensure that each area maintains required pressure differentials for safe, stable environmental control.

Air Change Rate (ACR) Verification

We calculate air changes per hour (ACH) to confirm adequate ventilation and filtration performance. This ensures your cleanroom meets required ACR standards based on its ISO classification or facility SOPs.

Recertification & Audit Preparation

Our airflow and particle testing services provide the documentation needed for ISO 14644 compliance, USP 797/800 facilities, FDA audits, and internal quality reviews. We support annual or semi-annual recertification schedules.

Get Your Airflow & Particle Testing Done

We proudly provide airflow testing, particle counting and ISO 14644 verification across:


Raleigh, Durham, Chapel Hill, Cary, Apex, Morrisville, and the greater Triangle region.

Need airflow validation, particle counts, or audit prep?
Triangle Cleanroom Pros delivers fast, reliable, ISO-compliant testing with precise, documented results.

Trusted cleanroom certification and lab compliance specialists serving research, biotech, and technical facilities throughout the Triangle.

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