The chart divides dust contamination into three main classes:
A: Re-blast the surface, then use compressed air and a vacuum brush. Retest until Class 1 is achieved. Keywords used: iso 85023 dust level chart pdf updated, ISO 8502-3:2017, surface cleanliness, tape test, dust class 1 2 3, coating inspection, abrasive blasting, steel preparation. iso 85023 dust level chart pdf updated
While ISO 8502 focuses on soluble contaminants, (often confused with the older or related standards) is the critical benchmark for assessing the quantity and size of residual dust on a steel surface after preparation. Technically, the correct designation is ISO 8502-3 , but industry professionals widely search for "ISO 85023" as a common typo or legacy reference. The chart divides dust contamination into three main