Iso 85023 Dust Level Chart Pdf Updated Jun 2026

| Size Rating | Description of Dust Particles | | :--- | :--- | | | Particles not visible under 10x magnification. | | Class 1 | Particles visible under 10x magnification but not visible to the naked eye (generally less than 50 µm). | | Class 2 | Particles just visible to normal or corrected vision (50 to 100 µm in diameter). | | Class 3 | Particles clearly visible to normal or corrected vision (less than 0.5 mm in diameter). | | Class 4 | Particles 0.5 to 2.5 mm in diameter. | | Class 5 | Particles greater than 2.5 mm in diameter. |

If you meant a different standard number (e.g., ISO 8501, ISO 8503, or ISO 8502-6), please clarify and I will generate the correct updated chart. The above is the for “ISO 85023” = ISO 8502-3:2017.

Use a specific pressure-sensitive adhesive tape as defined by the standard.

Executing the test correctly ensures that field inspections yield repeatable results that match the standard reference charts.

As of the latest revision (ISO 8502-3:2017), the official chart is freely redistributable due to copyright by ISO. However, you can legally obtain the updated PDF via: iso 85023 dust level chart pdf updated

For quality control inspectors, asset owners, and protective coating professionals, using an updated is critical to verifying that a substrate meets strict industrial cleanliness criteria before any primer or paint is applied. What is the ISO 8502-3 Dust Tape Test?

What is the of the asset (e.g., marine immersion, bridge structural steel, or internal tank lining)?

You might notice a slight difference in the keyword "iso 85023 dust level chart pdf updated." In technical documentation, the correct reference is . The "23" in your search is a common typing error. All official documentation, charts, and kits will use the correct designation ISO 8502-3:2017 .

“This is a disaster,” she whispered. “We have a turbine blade shipment leaving Rotterdam tomorrow. I signed off on it yesterday using the old chart.” | Size Rating | Description of Dust Particles

The quantity rating determines the percentage of the tape surface covered by dust. The scale ranges from clear to heavily contaminated: No dust visible under 10x magnification.

While the standard itself provides the framework for testing, the project specification defines the pass/fail threshold . In major marine, oil and gas, and structural steel specifications (such as those matching NORSOK or Saudi Aramco standards), the standard acceptance baseline is: Maximum Size Class: 2

If you can tell me you are testing for, or if you need help finding a specific manufacturer's kit (like Elcometer or Defelsko), I can help you pick the best tools. Share public link

The current version of ISO 8502-3 is , confirmed on June 30, 2022. The standard is available for purchase in PDF format from multiple authorized distributors: | | Class 3 | Particles clearly visible

Press the tape onto the prepared steel surface, ensuring good contact. Remove Tape: Remove the tape gently.

ISO 8502-3 is a global standard developed by the International Organization for Standardization. It outlines the specific method for assessing dust remaining on cleaned steel surfaces before painting.

Peel the tape off and place it onto a contrasting background (usually a black or white test chart).

. Per the standard, this overall discoloration must be recorded as . Step-by-Step Procedure for a Valid Dust Tape Test