Iso 85023 Dust Level Chart Pdf Updated Jun 2026

Proper surface preparation is critical for coating adhesion; failure to meet specified dust limits directly undermines the entire coating system's longevity and performance.

For accurate classification, you need a high-resolution, color-calibrated PDF. Print it on photo paper or use a color-accurate tablet in the field. iso 85023 dust level chart pdf updated

Inspectors must also classify the physical size of the dust particles using an illuminated hand lens with 10x magnification. Description Particle Size Dimension Particles not visible Under 50 µm in diameter Class 1 Small particles Visible only under 10x magnification (50 µm to 100 µm) Class 2 Medium particles Proper surface preparation is critical for coating adhesion;

The potential accumulation of dust is particularly critical on horizontal surfaces, the interior of pipes, and inside structural cavities, where special inspections must be carried out to ensure adequate cleaning before painting. Inspectors must also classify the physical size of

Particles are visible only with magnification (10x). Class 2: Particles are just visible to the naked eye. Class 3: Particles are clearly visible to the naked eye ( Class 4: Large particles ( Class 5: Very large particles ( 3. How to Perform the ISO 8502-3 Tape Test (Step-by-Step)

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