Plastic Resin COA Checklist: Verify an Imported Batch

Imported resin COA checklist: check lot traceability, test methods, specs and retained samples before you release a batch.

Plastic Resin COA Checklist: Verify an Imported Batch

What a COA Must Prove—and What It Cannot

Seven Fields to Check Before Releasing an Imported Batch

1. Supplier, manufacturer, grade and material description.

1. Purchase-order, shipment and packaging details.

1. Lot number on the COA, bags or containers, and receiving records.

1. Test results against your approved limits—not only a PASS statement.

1. Test methods and conditions for each reported value.

1. COA issue date, responsible quality function and document completeness.

1. Required compliance documents for the intended application.

COA vs TDS: Why You Need Both

Test Methods: Making the Supplier’s Numbers Comparable to Yours

Lot Traceability and Retained Samples Across a Multi-Batch Shipment

If a Batch Fails: Hold, Retest or Reject?

Request the Right Documents Before a Quote