Iso 85023 Dust Level Chart Pdf Updated ((link)) May 2026

The most current version of the standard is ISO 8502-3:2017, which details the "pressure-sensitive tape method" for assessing dust on blast-cleaned steel surfaces. This assessment involves comparing a used tape sample against pictorial ratings to determine both dust quantity and particle size. ISO 8502-3 Dust Classification Chart

The standard provides two main evaluation scales from 0 to 5. Rating/Class Dust Quantity Assessment Dust Particle Size Description 0 No dust visible on tape No particles visible under 10x magnification 1 Lowest dust quantity

Visible under 10x magnification, but not with normal vision ( 2 Generally accepted limit Just visible with normal vision ( 3 Moderate dust; requires re-test Clearly visible with normal vision (up to 4 High dust quantity Particles between 5 Excessive dust quantity Particles larger than Official Resources & PDFs

While the full official standard must be purchased directly from the International Organization for Standardization (ISO), summary charts and data sheets are often provided by equipment manufacturers:

Official PDF Sample: A preview of the ISO 8502-3:2017 standard is available via iTeh Standards. iso 85023 dust level chart pdf updated

Assessment Guide: A practical instructional PDF for field use is hosted by Paint Test Equipment Test Kit Reference: Commercial kits like the Elcometer 142 Go to product viewer dialog for this item. include physical comparator boards based on these classes. Key Application Tips

Acceptance Level: In most industrial coating specifications, Rating 2 is the maximum allowable level for both quantity and size; anything higher typically requires re-cleaning.

Procedural Rule: Always discard the first three turns of a new tape roll to ensure no environmental contamination affects the test.

Visual Aid: Because this is a qualitative visual test, using an illuminated 10x magnifier is required for Class 0 and 1 assessments. Elcometer 142 ISO 8502-3 Dust Tape Test Kit The most current version of the standard is

Technical Paper: ISO 8502-3:2017 – Assessment of Dust Level on Steel Surfaces (with Updated Reference Chart)

Document ID: ISO-8502-3-Guide-2025
Subject: Surface cleanliness, dust grading, coating quality assurance
Applicable to: Abrasive blast-cleaned steel prior to coating

The ISO 8502-3 Dust Level Chart (Updated): A Visual Breakdown

Since you are searching for the ISO 8502-3 dust level chart PDF updated, let’s describe exactly what that chart contains until you can download the official copy.

The chart is divided into two main assessment axes:

What is the ISO 85023 Dust Level Chart?

The ISO 85023 dust level chart is a visual and descriptive reference table that classifies the amount of dust remaining on a blasted steel surface. It works in conjunction with the pressure-sensitive tape method (also known as the "tape test"). Key Application Tips Acceptance Level: In most industrial

The chart divides dust contamination into three main classes:

| Dust Class | Description | Typical Application | |---|---|---| | Class 1 | Dust particles visible only under magnification (≤ 10x). No particles visible to the naked eye. | High-performance coatings (epoxy, polyurethane) for aggressive environments. | | Class 2 | Dust particles visible to the naked eye but not densely distributed. Moderate dust quantity. | General industrial environments. | | Class 3 | Dust layer clearly visible, dense distribution of particles. | Low-performance coatings or non-critical areas (rarely accepted). |

How to Perform the ISO 85023 Dust Test (Step-by-Step)

To properly use the dust level chart, you must first collect a representative dust sample. Follow this updated procedure: