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A supplier Certificate of Analysis provides analytical information reported for a specific lot.
Independent testing can help determine whether selected parameters in the material submitted to PBR align with the values or specifications requiring verification.
Do not automatically retest every line.
Identify parameters important to:
Results obtained using different methods may not be directly comparable.
If the sample does not represent the lot, the comparison may have limited value.
The goal is not simply to compare two numbers.
The important question is:
Does the independently measured result support the supplier and material decision?
Send PBR the parameter you want to verify, the matrix and applicable specification.