Iso 85023 Dust Level Chart Pdf Updated [upd] Today

The ISO 8502-3 standard provides a method for assessing the cleanliness of surfaces in terms of dust and other contaminants. The standard is part of the ISO 8502 series, which focuses on the preparation of steel substrates before applying paints and related products.

3/4 (quantity 3, size 4).

The standard employs a qualitative approach known as the "pressure-sensitive tape method".

The ISO 8502-3 chart is used to compare the dust collected on the tape against pictograms representing different classes of cleanliness. The assessment has two components: and Particle Size . Dust Quantity Rating (Classes 0–5) iso 85023 dust level chart pdf updated

The standard also defines six descriptive classes for the . The size class is identified by the largest particles present in the sample. The following table provides the descriptive size classes.

Compare the tape sample against the pictorial reference chart to determine the dust rating. Understanding the Dust Rating Chart

Just visible with normal or corrected vision (50 μm to 100 μm). Naked Eye / Corrected Vision Clearly visible with normal vision (up to 0.5 mm). Naked Eye / Corrected Vision Class 4 Large particles clearly visible (0.5 mm to 2.5 mm). Naked Eye / Ruler Class 5 Macro-particles clearly visible (larger than 2.5 mm). Naked Eye / Ruler 2. Dust Quantity Ratings The ISO 8502-3 standard provides a method for

High dust level; dense cluster of particles covering a significant portion of the tape.

: Place the tape firmly onto the prepared steel surface. Use a calibrated tool like the Elcometer 145 Dust Tape Roller to press it down. This roller applies a mandatory, standardized spring force of

The assessment is based on two factors:

ISO 8502-3 defines a qualitative field test to assess the average quantity and size of dust particles remaining on steel surfaces before painting. Dust accumulates naturally from abrasive blasting media, environmental fallout, or nearby grinding work.

Moderate density. Particles are easily visible, covering a noticeable portion of the tape.