CLASS 2 – ACCEPTABLE (with approval)
: Essential to protect the testing area from body oils and sweat. Execution Process
The chart defines five classes (grades) for the . In practice, a common project specification requires the dust contamination level not to exceed Grade 2 or 3.
Visible under 10x magnification, but not with normal vision ( Generally accepted limit Just visible with normal vision ( 3 Moderate dust; requires re-test Clearly visible with normal vision (up to 4 High dust quantity Particles between 5 Excessive dust quantity Particles larger than Official Resources & PDFs
When downloading a , ensure it matches the technical requirements of the official ISO 8502-3 second edition . iso 85023 dust level chart pdf updated
[Extract Tape] ➔ [Apply via Roller/Thumb] ➔ [Peel & Place on Board] ➔ [Evaluate & Record] Step 1: Equipment Preparation Iso 8502-3 2017 | PDF - Scribd
Remove a piece of tape approximately 200 mm (8 inches) long. Discard the first three turns from the roll before cutting the test piece.
ISO 8502-3 is an international standard titled "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 (pressure-sensitive tape method)" .
Which deliverable should I create first? CLASS 2 – ACCEPTABLE (with approval) : Essential
Use clean, washed, and properly screened abrasives. Low-quality recyclables often break down into excessive fine dust.
If you are setting up an inspection plan, ensure you obtain an official copy of the standard alongside your field reference charts to guarantee complete compliance with global engineering specifications.
The ISO 8502-3 dust assessment comprises two distinct components: and dust quantity . Both must be evaluated and reported to fully characterize the dust contamination level of a prepared surface.
: A contrast backdrop (usually black or white) to mount the tape for review. Visible under 10x magnification, but not with normal
, knows that even microscopic dust can cause a multi-million dollar coating to peel within years. To ensure the steel is truly ready for paint, she relies on , the "Gold Standard" for surface cleanliness. The Test of Truth
The updated 2017 chart introduces a clearer matrix. Here is a text-based interpretation:
While official ISO standards must be purchased directly from ISO or national bodies, updated PDF summary charts allow field inspectors to quickly reference specifications on tablets and smartphones without carrying bulky paper manuals into confined spaces.
You can find the updated ISO 8502-3:2017 standard and the dust level chart in PDF format on the International Organization for Standardization (ISO) website or through other online resources.