ISO 14644 is a multi-part standard for cleanrooms and associated controlled environments. Part 3 (officially titled “Cleanrooms and associated controlled environments — Part 3: Test methods”) specifies the testing procedures to prove that a cleanroom meets the required classification ISO 14644-1.
The standard covers:
The 2019 edition replaced the previous ISO 14644-3:2005. The 2019 version introduced significant updates, including new test methods for Airborne Molecular Contamination (AMC) and revised guidance for filter leakage testing. iso 146443pdf 2021
If you have typed “iso 146443pdf 2021” into a search engine, you are likely part of a critical industry—pharmaceuticals, biotechnology, medical devices, aerospace, or semiconductor manufacturing. You need the most current version of the international standard for cleanroom testing.
First, a crucial clarification: The correct standard is ISO 14644-3:2019. There is no official “2021 version” of the document itself. However, many users search for “iso 146443pdf 2021” because of minor technical corrigenda published in 2020 and 2021, or due to regional adoptions (e.g., EN ISO 14644-3:2019) that were harmonized across Europe in 2021. ISO 14644 is a multi-part standard for cleanrooms
This article serves as your comprehensive resource. We will explain:
The standard specifies the requirements for test equipment, including: The 2019 edition replaced the previous ISO 14644-3:2005
In late 2020 and early 2021, ISO released minor technical corrigenda (corrections) to ISO 14644-3:2019. These corrected typographical errors in formulas and clarified certain test setup diagrams. Any ISO 14644-3 PDF purchased from an authorized reseller after March 2021 should include these corrections.