Then she grabbed her hard hat. The offshore wind might wait, but dust never did.
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
I understand you’re looking for a document on (often confused with a non-existent “ISO 85023”), which is the standard for assessing dust levels on steel surfaces before coating. There is no ISO 85023 — the correct reference is ISO 8502-3:2017 (Preparation of steel substrates before application of paints and related products — Tests for the assessment of surface cleanliness — Part 3: Assessment of dust on steel surfaces prepared for painting). iso 85023 dust level chart pdf updated
The standard prescribes a simple, low-cost, yet highly effective field test using clear pressure-sensitive adhesive tape. Required Equipment
The standard uses two primary metrics to grade surface cleanliness: (pictorial) and Size Class (descriptive). 1. Dust Particle Size Classes Then she grabbed her hard hat
Exceptional cleanliness; required for highly critical coating environments.
You can download the ISO 8502-3:2017 PDF from the following sources: Record both the Quantity Rating and the Size Class (e
: Particles visible only under 10x magnification (typically below 50 µm).