Iso 85023 Dust Level Chart Pdf Updated -

ISO 8502-3 standard is a critical benchmark in industrial coating, specifically designed to assess residual dust on cleaned steel surfaces before painting. Even after rigorous abrasive blasting, microscopic dust particles can remain, acting as a barrier that prevents proper paint adhesion and traps moisture, which leads to premature corrosion, peeling, and flaking. The Mechanics of the "Tape Test"

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). iso 85023 dust level chart pdf updated

ISO 8502-3:2017 remains the most current and updated version of the standard for assessing dust on steel surfaces. While last reviewed and confirmed in ISO 8502-3 standard is a critical benchmark in

- Surface identification: [tank, pipe, beam]
- Cleaning method: [garnet, slag, steel grit]
- Dust assessment date & time:
- Ambient conditions (humidity, temp):
- Tape brand & batch number:
- Sample locations (grid or sketch):
- Dust class per ISO 8502-3:2017: _____
- Largest particle size observed: _____ µm
- Inspector name & signature:

• Five dust levels (e.g., D0 — negligible, D1 — light, D2 — moderate, D3 — heavy, D4 — very heavy).
• For each level: % surface area covered, typical particle size range, photographic example, and recommended action (e.g., "Acceptable", "Wipe with solvent", "Re-blast").
• Color-coded bars and numerical thresholds.

For over two decades, the global standard for assessing this dust has been ISO 8502-3: 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) . Five dust levels (e

The 2017 update maintains the core visual comparison method but ensures consistency with other modern surface preparation standards. INTERNATIONAL STANDARD ISO 8502-3

• Write: Quantity: ____ (1-5) / Median Particle Size: ____ µm / Max Particle Size: ____ µm.

Her phone buzzed. It was Jan, the lab manager.