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发表于 2024-9-10 14:48:36
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PDA TR49 Points to Consider for Biotechnology Cleaning Validation
11.5 Non-product Contact surfaces
Non-product contact surfaces may be defined in different ways by manufacturers. One way is to regard any equipment surface that does not directly contact the drug substance (the active) or drug product as non-product contact. Examples under this definition might be lyophilizers, equipment used solely to manufacture and transfer buffers and media, and equipment to process drug product after completion of primary packaging. Other companies may choose to define some of these surfaces as “indirect product contact,” since in the case of buffersand media, any residues left on equipment surfaces after cleaning will contact the next buffer/media and will eventually contact the drug substance manufactured with that next buffer/media. Because of the limited impact of these indirect or non-product contact surfaces, requirements for cleaning validation can be reduced or cleaning validation can be eliminated in certain situations. |
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