Updated 'link' | Iso 85023 Dust Level Chart Pdf

Any tape recording a Quantity 3, 4, or 5 fails inspection. If a surface fails, it must be blown down with clean, dry compressed air or vacuumed, and re-tested from scratch. Downloadable & Physical Tooling Options

Compare the tape to the ISO 8502-3 visual chart under good lighting conditions. Record both the Quantity Rating and the Size Class (e.g., "Dust Level: Rating 2, Class 3"). Why You Need the Updated ISO 8502-3 PDF Chart

To quantify three things:

. Run the roller three times back and forth over the tape, with each stroke lasting roughly 5 to 6 seconds.

Dust quantity is determined by comparing the pressure-sensitive tape to pictorial references provided in the ISO 8502-3 standard . Description Common Acceptance Level No particles visible under 10x magnification. Always Accepted 1 Very small amount of dust; barely visible. Always Accepted 2 Low amount; particles just visible. Industry Standard Limit 3 Moderate amount; clearly visible. Often Rejected 4 Large amount; easily noticeable. 5 Very large amount; dense coverage. 2. Dust Particle Size Classes iso 85023 dust level chart pdf updated

Dust on a prepared surface acts as a bond-breaker between the primer and the steel substrate. It can also absorb moisture, leading to osmotic blistering under the paint film. The ISO 8502-3 standard standardizes how inspectors sample, visually evaluate, and record dust contamination before any coating application begins. The Pressure-Sensitive Tape Test Method

: Peel back and discard the first three full turns of the pressure-sensitive tape roll to avoid using contaminated adhesive. Any tape recording a Quantity 3, 4, or 5 fails inspection

is the internationally recognized standard governing the assessment of dust on blast-cleaned steel surfaces before painting. Dust on a substrate severely weakens coating adhesion. It traps moisture, leading to premature blistering, peeling, and failure of the entire coating system.

ISO 8502-3:2017 describes a qualitative test method for assessing dust remaining on cleaned steel surfaces prepared for painting. The method is applicable to steel surfaces that, before cleaning, corresponded to rust grades A, B, or C as defined in ISO 8501-1. The standard can be used either as a "pass/fail" test by comparison with specific limits or to provide a permanent record of the dust present on a surface by mounting the used tapes on tiles, cards, or paper. Record both the Quantity Rating and the Size Class (e

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ISO 8502-3 Dust Level Chart: The Complete Guide to Surface Cleanliness