CoA vs CoC: What Lab Buyers Should Know
September 15, 2026
A CoA shows measured test results for your batch. A CoC only promises the product meets spec. Know which document to demand before you order.
A CoA shows measured test results for your batch. A CoC only promises the product meets spec. Know which document to demand before you order.
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The box looked fine. Fifty cases of 9-425 caps, shrink-wrapped, CoA folded neatly on top. Then our tech pulled a cap at random, felt the liner with a gloved…
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