Iso 85023 Dust Level Chart Pdf Updated May 2026

ISO 8502-3 standard provides a standardized method for assessing the quantity and size of dust on steel surfaces prepared for painting using the pressure-sensitive tape method. ISO - International Organization for Standardization Current Standard Status The most current version of this standard is ISO 8502-3:2017 . While initially published in 2017, it was formally reviewed and confirmed in 2022

Introduction: Why the ISO 85023 Standard Matters

ISO 8502-3

I understand you’re looking for a document on (often confused with a non-existent “ISO 85023”), which is the standard for assessing dust levels on steel surfaces before coating. There is no ISO 85023 — the correct reference 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: Assessment of dust on steel surfaces prepared for painting). iso 85023 dust level chart pdf updated

Class 3 (High – Typically Rejected)

Offshore / Marine (Splash Zone)

| Coating Environment | Acceptable Dust Quantity | Max Particle Size | Recommended Action | | :--- | :--- | :--- | :--- | | | Class 1 or 2 | <100 µm | High-pressure fresh water rinse before coating. | | Chemical Storage Tank Lining | Class 1 | <50 µm | Vacuum cleaning + tack rag immediately before coating. | | Bridge Structural Steel (Atmospheric) | Class 3 | <200 µm | Compressed air blow-down acceptable. | | Pipes buried in soil | Class 3 | <300 µm | Minor dust acceptable if primer is high-build. | | Recreational equipment / handrails | Class 4 | <400 µm | Cosmetic only – structural risk low. | ISO 8502-3 standard provides a standardized method for

ISO 8502-3 dust level chart PDF updated

Since you are searching for the , let’s describe exactly what that chart contains until you can download the official copy. Common Mistakes When Using the ISO 8502-3 Dust

Common Mistakes When Using the ISO 8502-3 Dust Chart

Industry

| | Required Dust Class | Largest Particle Allowed | | --- | --- | --- | | Offshore Wind / Oil & Gas | Class 1 | < 50 µm | | Marine (Ballast Tanks) | Class 1 (or 2 max) | < 50 µm | | Bridges & Highways (C4) | Class 2 | < 100 µm | | Water Tanks (Potable) | Class 1 | < 50 µm | | General Structural Steel (C2/C3) | Class 2 | < 100 µm |