Continuous ? Process ? Verification : An alternative approach to process validation in which manufacturing process performance is continuously monitored and evaluated .Design ? Space : The multidimensional combination and interaction of input variables ( e . g . , material attributes ) and process parameters that have been demonstrated to provide assurance of quality .This term includes such attributes as the identity , strength , and purity ( from ICH Q6A Specifications Test Procedures and Acceptance Criteria for New Drug Substances and New Drug Products : Chemical Substances ) .
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