The science of particle deposition monitoring — explained by the scientist who defined it.

Six videos by Koos Agricola. From the physics of particle deposition to risk assessment, air cleanliness requirements, measurement methods, and surface cleanliness. Everything you need to make the right contamination control decision.

Contamination control decisions go wrong when they are based on the wrong measurement. ISO classification tells you about the air. ISO 14644-17 tells you about the product. Understanding the difference — and knowing how to calculate what your product actually requires — is the knowledge that separates a cleanroom that looks compliant from one that actually protects product.

Koos Agricola has spent more than four decades developing and applying this knowledge across electronics, automotive, aerospace, medical devices, semiconductor, defense, and precision manufacturing. He co-authored the peer-reviewed research that became ISO 14644-17:2021, the international standard on particle deposition rate applications. He has conducted contamination analyses at facilities from semiconductor back-end assembly in Asia to the primary mirror assembly of the James Webb Space Telescope. The Brookhuis Academy makes that knowledge available in eight structured video modules — free, directly on YouTube, with no account required.