Dust particles are not visible under 10x magnification.
Which deliverable should I create first?
Many free charts online are from obsolete versions (pre-2010). Using an outdated chart can lead to failed audits or incorrect acceptance of dirty steel. iso 85023 dust level chart pdf updated
ISO 8502-3 Dust Level Chart: The Complete Guide to Surface Cleanliness
Exceptional cleanliness; required for highly critical coating environments. Dust particles are not visible under 10x magnification
Use high-quality, ISO 8502-3 compliant adhesive tape.
The standard categorizes dust contamination using two distinct metrics: (how much dust is present) and Size (how large the particles are). A complete specification will always state both limits (e.g., "Max Quantity 2, Max Size Class 3"). 1. Dust Quantity Ratings (0 to 5) Using an outdated chart can lead to failed
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.
While quantity is the most common requirement in coating specifications, the size of the particles is also classified. ISO 8502-3 testing | Industrial Physics
These suppliers sometimes include the chart as a PDF in their product documentation.