Iso 85023 Dust Level Chart Pdf Updated __full__ Jun 2026

If you need a PDF for educational purposes, general reference, or to include in a method statement, you can obtain it through the following channels:

Use high-quality, ISO 8502-3 compliant adhesive tape.

For assessing Class 1 and Class 2 particles and Rating 0 surfaces.

The industry-standard method for this assessment is defined by (Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method)).

3/4 (quantity 3, size 4).

Need the latest ISO 85023 dust level chart? This guide explains the updated PDF version, how to read the chart, test methods (tape/bristle), and why it matters for surface cleanliness before coating.

| Class | Description | Visual Appearance | | :--- | :--- | :--- | | | Very Light | Very few particles visible. The tape looks almost clean. | | 2 | Light | Particles are distinct but sparse. | | 3 | Moderate | Particles are clearly visible and distributed across the tape. | | 4 | Strong | A heavy layer of dust; the tape is significantly obscured. | | 5 | Very Strong

Visually compare an area of the tape equal to the reference area shown in the standard's Figure 1. Record the corresponding quantity rating.

Compare the tape to the ISO 8502-3 visual chart under good lighting conditions. Record both the Quantity Rating and the Size Class (e.g., "Dust Level: Rating 2, Class 3"). Why You Need the Updated ISO 8502-3 PDF Chart iso 85023 dust level chart pdf updated

“The particle density,” Jan said. “The old chart showed Size 3 as scattered particles under 10x magnification. The new update—ISO 85023-3:2025—has revised the micrograph. Size 3 now shows clusters . Which means our current ‘acceptable’ threshold for turbine tower internals is now a ‘reject’.”

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.

To accurately classify the size of the dust, inspectors use a illuminated magnifier with a graduated scale (graticule). Size Class Particle Description / Dimension Inspection Visibility Particles less than in diameter Particles only visible under magnification. Not visible to the naked eye. Class 1 Particles between Particles just visible with normal or corrected vision. Class 2 Particles between Particles clearly visible with normal or corrected vision. Class 3 Particles between

magnifier to grade the size class, and compare the overall pattern visually to the pictorial reference chart to log the quantity rating. Understanding the Updated PDF Requirements If you need a PDF for educational purposes,

An accurate dust level assessment ensures high-performance industrial coatings stick to steel surfaces and prevent premature corrosion failure.

The following outlines the complete procedure for conducting an ISO 8502-3 dust assessment:

Provides expert, compliant testing devices and educational materials on the 8502-3 standard.

It offers a permanent record of the dust present at the time of inspection. 3/4 (quantity 3, size 4)