Professional Detailing2 min read

Coating Test Report Amendments: Keep the Original and Corrected Conclusions Traceable

When a laboratory issues an amended report, preserve the version history and identify which conclusions changed. A corrected document should replace outdated summaries while remaining traceable to the original work.

Updated · NANOLAB Knowledge

The key distinction

An amendment may correct an identifier, calculation, wording or interpretation. Its effect depends on the change, so the team should review more than the filename. Product pages, supplier scorecards and internal approval records may all need updating if they relied on the superseded information.

Practical checks

  1. Obtain the laboratory's explanation of the amendment.
  2. Compare the affected fields and conclusions with the earlier report.
  3. Update dependent records and mark the superseded version clearly.

Example

Illustrative example: a laboratory corrects the sample mapping in a report. A distributor updates the PDF folder but leaves a supplier comparison based on the old mapping. The document replacement alone has not corrected the purchasing evidence; the dependent conclusion also needs review.

Scope and limits

Do not edit a laboratory report yourself to make it appear corrected. Request the issuer's authorized amendment and preserve its identity. This guide concerns version control and does not imply that every amendment invalidates all earlier observations or that a minor correction changes the product's performance.

Related guidance

Ask NANOLAB about the exact product and intended use. Use the current product documentation for formulation-specific instructions.

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A report should distinguish the planned method from the procedure actually performed. When a deviation occurs, document it and its potential effect before using the result to support a coating claim.