Iso - 8502-3 Dust Level Chart Updated

ISO 8502-3, formally titled "Assessment of dust on steel surfaces prepared for painting (pressure-sensitive tape method)," describes a procedure to determine the quantity and size of dust particles remaining on a substrate after preparation. Dust is a loose particulate matter that can prevent a coating from bonding with the steel, leading to issues like peeling, flaking, or premature corrosion. The ISO 8502-3 Dust Level Chart: Ratings & Classes

: The captured dust is visually compared against pictorial references to determine its quantity and inspected under magnification to determine its particle size . ISO 8502-3 Dust Level Ratings iso 8502-3 dust level chart

For immersed service, offshore, or C5-M environments, even size 3 dust may be unacceptable. The chart’s “pass” threshold is often too generous. ISO 8502-3, formally titled "Assessment of dust on

Understanding the ISO 8502-3 Dust Level Chart: A Guide to Surface Cleanliness ISO 8502-3 Dust Level Ratings For immersed service,