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Every container of starting material must be identified .
Requirements for sampling active materials do not differ from those for excipients.
The validation of a supplier cannot be accepted without a regular and adequate inspection. Such validation should comprise a number of actions, which may include all or most of the following:
The use of a questionnaire prepared by the potential customer and completed by the potential supplier, concerning the supplier's operating Quality System.
Approval inspection of the potential supplier's operation by the potential customer, or by a third party on their behalf. For example, a sister company located in the same country as the supplier. Reliance on inspection reports of other regulatory authorities by the potential customer is normally not sufficient, unless it can be demonstrated that the inspection covered the specific operations to be used in the processing of materials for the potential customer.
A program to evaluate the quality of each shipment of materials on receipt by the customer. In this regard, sampling of powders should be representative of the container contents. For example, sampling from the top, middle and bottom of drums, in the absence of validated sampling positions. Reduced testing programs should be evaluated by the inspector. Sampling by the suppliers should be validated.
A program for regular re-inspection of the supplier's operation and for ongoing monitoring of the quality of material supplied, for example, through trend analysis of analytical results, periodic full testing.
In the case of active ingredients, the use of brokers as sources should be carefully evaluated. The quality of each batch of material should be confirmed through testing of representative samples.
