Dust Test Iso 8502-3 ✯

Results are categorized by two main metrics: and Size . 1. Dust Quantity Rating

ISO 8502-3 describes a method for assessing the quantity and size of dust particles on steel surfaces prepared for painting. It is applicable to surfaces prepared by methods such as: dust test iso 8502-3

Trapped dust can absorb moisture, fueling osmotic blistering and corrosion beneath the paint film. Results are categorized by two main metrics: and Size

| Limitation | Details | |------------|---------| | | Different inspectors may assign different ratings. | | Only loose dust | Does not detect embedded or soluble contaminants. | | Sampling variability | Dust is often non-uniform – multiple tests needed. | | Tape quality | Variation in tape tackiness affects collection efficiency. | | No clean/dirty definition | Standard gives no universal acceptance limit. | | Poor for very fine dust | Sub-10 µm particles are hard to see, but may still affect coatings. | It is applicable to surfaces prepared by methods

Assessment of Surface Cleanliness Prior to Coating: A Technical Review of the Pressure-Sensitive Tape Test (ISO 8502-3)