This part of ISO 13448 provides guidelines specifying the organizational principles of acceptance sampling in situations where the contract or the legislation provides for successive inspection to be carried out by different parties: the supplier, the customer and/or a third party.These guidelines are designed for inspection of populations of any product supplied or delivered in discrete items in lots. They are applicable to. supplier inspection (final inspection, product certification upon supplier’s request),. customer inspection (incoming inspection, audit inspection, acceptance sampling),. third-party inspection (certification of product, inspection and