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Standards of judging the acceptability of manufactured items.

Related Terms

PATCH TEST

A method by which a specified volume of fluid is filtered through a membrane filter of known pore structure. All particulate matter in excess of an 'average size', determined by the membrane characteristics, is retained on its surface. Thus, the membrane is discolored by an amount proportional to the particulate level of the fluid sample. Visually comparing the test filter with standard patches of known contamination levels determines acceptability for a given fluid.

ACCEPTABILITY

State or condition of meeting minimum standards for use, as applied to methods, equipment, or consumable products.

AVERAGE SAMPLE NUMBER

An anticipated number of pieces that must be inspected to determine the acceptability of a particular lot.

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