Iso 85023 Dust Level Chart Pdf Updated Official

ISO 8502-3 is a critical part of the ISO 8502 series, which focuses on tests for assessing surface cleanliness. Specifically, Part 3 describes the "pressure-sensitive tape method" for evaluating residual dust on steel surfaces that have been cleaned and prepared for painting. Dust contamination is a major threat to coating integrity—it acts as a weak boundary layer, preventing proper adhesion and leading to premature coating failure, such as flaking or blistering. By providing a standardized method for sampling and rating dust, ISO 8502-3 allows inspectors and contractors to make objective, pass/fail decisions about surface readiness, ensuring the performance of subsequent paint systems.

The standard categorizes dust based on two primary metrics: and Dust Size Class . 1. Dust Quantity Rating (0 to 5)

If you are looking for an for your latest project quality control plan, this comprehensive guide breaks down the standard, the visual assessment charts, inspection procedures, and the digital evolution of dust testing. What is ISO 8502-3? iso 85023 dust level chart pdf updated

The standard also defines six descriptive classes for the . The size class is identified by the largest particles present in the sample. The following table provides the descriptive size classes.

: A scale from 0 to 5, where 0 is no visible dust and 5 is heavily contaminated. Dust Particle Size Class ISO 8502-3 is a critical part of the

The standard employs a qualitative approach known as the "pressure-sensitive tape method".

Searching for the is the first step to compliance. Visit your national standards body or a reputable NACE training center today to download the official version. By providing a standardized method for sampling and

For compliance in 2026, it is vital to use the updated pictorial standards. While the standards themselves are proprietary, several sources offer compliant charts or interpretation guides.

Particles are classified by their diameter using a 10x magnifier: Description Typical Diameter No particles visible Visible under 10x magnification (not visible to naked eye) Just visible with normal vision Clearly visible with normal vision Clearly visible Clearly visible Assessment Procedure Preparation