Replying to [Rizzob]:First thing you should do is establish a standard to become your basis for evaluation and prepare a checklist. You may assign points to it. Write the criteria based on your experience or from somebody else, if we are talking of electronic item or appliance, or consumer item. You may request the vendor for the technical characteristics of the product and use this as your basis plus the criteria you have listed. When you get the actual sample, follow your checklist and grade the sample. Beware that samples may have higher tolerances than standard production.
For industrial equipment and materials, this is normally covered by standards, specifications, testing requirements, etc., and become the basis of evaluation.
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