Iso 14644-3.pdf -
ISO 14644-3 provides the standardized test methods for characterizing and verifying the performance of cleanrooms. While Part 1 of the series focuses on the classification of air cleanliness, Part 3 outlines the actual physical tests required to prove that a cleanroom environment meets its designated operational specifications. 🎯 Scope and Core Purpose
Key distinction: This standard does not cover routine monitoring (that is Part 2). Instead, it focuses on periodic qualification and installation/operational qualification (IQ/OQ) . Iso 14644-3.pdf
- Airflow Visualization (Annex C): Using smoke or fog, this test reveals turbulence, dead zones, and reverse flow. The standard has been updated to include high-definition video capture for objective documentation.
- Airflow Velocity & Uniformity (Annex D): For unidirectional (laminar) flow, velocity must be uniform. The standard defines test grids and acceptable deviation (typically ±20% from the mean).
Scope
This part of ISO 14644 specifies test methods for measuring the performance of cleanrooms and clean zones. It is intended to be used in conjunction with ISO 14644-1 (classification of air cleanliness by particle concentration) and ISO 14644-2 (monitoring to provide evidence of performance). ISO 14644-3 provides the standardized test methods for
