The primary purpose of this Technical Report is to give guidance in the selection of an acceptance sampling System, scheme or plan. It does this principally in the context of existing ISO Standards. The guidance in this Technical Report is confined to acceptance sampling of products that are supplied in lots and that tan be classified as consisting of discrete items (discrete articles of product). Esch item in a lot tan be identified and segregated from the other items in the lot and has an equal Chance of being included in the Sample. Esch item of product is countable and has specific characteristics that are measurable or classifiable as being conforming or nonconforming (to a given specification).