Strategy for streamlined release identity testing of chromatography media

In accordance with the US Code of Federal Regulations 21CFR 211.84 (6)(d)(1), a specific identity test must be performed for the release of chromatography media (stationary phase) before use in production of human pharmaceuticals. Due to the complexity of the physical and chemical properties of these media, i.e., variable particle morphology, insolubility, and chemical inertness, the development of specific identity tests presents a challenge. In this paper we report a new strategy for media identification that uses a combination of three relatively simple techniques: Fourier transform infrared (FT-IR) and near infrared (NIR) spectroscopy in conjunction with search libraries, and particle size distribution analysis. The methods are well established and suitable for routine application in a quality control laboratory. A hierarchical selection procedure utilizing these methods permits assignment of a unique identity for each of the chromatography media in use at a given facility, and form the basis of release tests for the media. Although this strategy was developed using specific media, the generic nature of the technology and the selection strategy proposed would permit its application to other chromatography media as well.