📘 Need the official PDF? Always buy from authorized sources (ISO.org, ANSI, etc.) to get the latest corrected version.
For most organizations, the essential starting points are:
| Test Category | Purpose | Application Method | | :--- | :--- | :--- | | | Locates leaks in filter media and/or bypass leaks around the filter frame | Aerosol challenge (PAO/DEHS) introduced upstream; downstream scanning with photometer | | Airborne Particle Count | Measures particle concentrations to verify the classification level as defined by ISO 14644-1 | Discrete light-scattering particle counters; sampling locations defined by statistical grid | | Airflow (Velocity/Uniformity) | Measures air velocity distribution across filter face to ensure consistent unidirectional flow | Anemometer traverses; acceptance typically ±20% of mean velocity in unidirectional zones | | Airflow Visualization | Observes airflow patterns to confirm directional control and absence of stagnant zones | Smoke/fog generation; video documentation of air movement | | Pressure Differential | Ensures directional airflow from cleaner to less clean areas | Calibrated differential pressure gauges; ≥10-15 Pa typically required between grades | | Recovery (Cleanup) | Determines time needed to return from challenge concentration to target cleanliness | Particle generator to elevate concentration; measure decay time to operating limits | | Leakage (Enclosure) | Verifies room integrity for containment applications (e.g., isolators) | Pressure decay or tracer gas methods | | Separative Device Testing | Validates performance of glove boxes, RABS, and isolators | Pressure hold and filter integrity tests specific to containment devices | iso 146443pdf 2021
– Regulators (FDA, EMA, WHO, NMPA) expect facilities to follow current ISO test methods during inspections. Without the correct standard, you cannot demonstrate compliance.
ISO 14644-3:2021 is a part of the ISO 14644 series, which focuses on cleanrooms and associated controlled environments. Specifically, this standard provides detailed requirements for the design, construction, and operation of cleanrooms, including their classification, testing, and certification. The standard is applicable to various industries, including: 📘 Need the official PDF
: In addition to the standard 100:1 recovery time, a 10:1 recovery time was introduced, which is more practical for lower-classified areas like ISO 8 or ISO 9. Relocation of Guidance
For each test, the standard provides recommended test apparatus, alternative procedures, and guidance on acceptance criteria. Where alternative methods are permitted, "customer-supplier agreement" is required to ensure appropriate test rigor. The standard is applicable to various industries, including:
The Operations Control Program (OCP) must include gowning procedures, cleaning and disinfection protocols, material transfer processes, personnel training and qualification, and documentation and record-keeping requirements.
The standard outlines how to measure physical parameters in cleanrooms, such as airflow, pressure, and particle levels. It is primarily used by industries requiring high levels of environmental control, including pharmaceuticals, microelectronics, and aerospace. Key Testing Procedures