. Run the roller three times back and forth over the tape, with each stroke lasting roughly 5 to 6 seconds.
“That’s three days of delay,” Jan sighed. “The client will invoice us for liquidated damages.”
is the internationally recognized standard governing the assessment of dust on blast-cleaned steel surfaces before painting. Dust on a substrate severely weakens coating adhesion. It traps moisture, leading to premature blistering, peeling, and failure of the entire coating system. iso 85023 dust level chart pdf updated
Users often upload scanned versions of the inspector's chart.
Pass a standardized roller or your thumb firmly over the tape three times to ensure maximum contact with any loose dust particles. “The client will invoice us for liquidated damages
Compare the tape sample against the ISO 8502-3 reference chart using a magnifying glass to determine the Dust Quantity Rating and Dust Size Class . Understanding the ISO 8502-3 Dust Level Ratings
Use tape that meets ISO 8502-3 specifications. Users often upload scanned versions of the inspector's chart
The updated standard emphasizes that any visible dust of size >500 µm is an automatic failure , regardless of quantity class.