The standard employs a qualitative approach known as the "pressure-sensitive tape method".
The standard uses two primary metrics to grade surface cleanliness: (pictorial) and Size Class (descriptive). 1. Dust Particle Size Classes iso 85023 dust level chart pdf updated
This article provides the breakdown of the ISO 85023 dust level chart PDF , including how to download the latest version, interpret the classes (1, 2, 3), and apply it correctly on-site. The standard employs a qualitative approach known as