Iso 85023 Dust Level Chart Pdf Updated ((hot)) File

I searched for the specific document “ISO 8502-3 dust level chart PDF updated” but could not find a standalone, officially updated PDF chart released separately by ISO.

Here is the precise, actionable information you need:

3. How to get the official updated PDF

• Purchase from ISO store – www.iso.org/standard/69316.html (ISO 8502-3:2017)
• Your national standards body (e.g., ANSI, BSI, DIN, JSA, SCC)
• Industry coatings libraries (NACE/AMPP, SSPC) often include it in standards packages
• No free legal version – ISO charges for copyright

4. If you need a quick reference chart (for field use)

Many coating inspectors use a laminated card from: iso 85023 dust level chart pdf updated

• Elcometer (Elcometer 139 Dust Tape Test kit includes the ISO chart)
• TQC Sheen (Dust test kit with reference scale)
• DeFelsko (Dust tape test accessories)

These suppliers sometimes include the chart as a PDF in their product documentation.

Axis 2: Particle Size Ranges

The chart displays actual-scale photographic examples of dust particles on a white background. For each quantity class, the chart shows typical particle sizes: I searched for the specific document “ISO 8502-3

• Fine (<100 µm): Barely visible to naked eye; looks like a light haze.
• Medium (100–200 µm): Visible as distinct specks.
• Coarse (200–500 µm): Clearly visible, larger than typical anchor pattern peaks.
• Oversize (>500 µm): Extremely problematic – indicates incomplete blasting or contamination.

Key Insight from the updated chart: A "Class 3" dust level with fine particles (<100 µm) might be acceptable for a pipe coating in a dry climate, but the same Class 3 with coarse particles (300 µm) is an automatic failure for any high-performance coating.

3. The Procedure (Step-by-Step)

1. Select Area: Choose a representative area of the blasted steel surface.
2. Apply Tape: Apply the specialized adhesive tape to the surface.
3. Pressure: Rub the back of the tape firmly to ensure good contact with the dust (a standard pressure is often applied using a specific roller or by rubbing with a fingernail/cloth).
4. Remove: Peel the tape off the surface at a steady speed. The dust particles will stick to the tape.
5. Mount: Place the tape onto the white background card or a glass plate.
6. Compare: Compare the tape against the ISO 8502-3 Visual Comparison Chart.

Introduction: Why the ISO 85023 Standard Matters

In the world of industrial coating, abrasive blasting, and protective painting, surface cleanliness is not negotiable. Before applying any high-performance coating—whether for a bridge, a pipeline, a ship, or an oil rig—you must ensure the surface is free from soluble salts, oil, grease, and dust. Purchase from ISO store – www

While ISO 8502 focuses on soluble contaminants, ISO 85023 (often confused with the older or related standards) is the critical benchmark for assessing the quantity and size of residual dust on a steel surface after preparation. Technically, the correct designation is ISO 8502-3, but industry professionals widely search for "ISO 85023" as a common typo or legacy reference.

This article provides the fully updated 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.

Note: The correct standard is ISO 8502-3:2017 – Preparation of steel substrates before application of paints and related products – Tests for the assessment of surface cleanliness – Part 3: Dust on steel surfaces prepared for painting (pressure-sensitive tape method).