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As a crucial element in pharmaceutical production, the updating of quality standards for pharmaceutical water has attracted significant attention. The 2025 edition of the Chinese Pharmacopoeia has optimized and simplified the relevant regulations for purified water, water for injection, and sterile water for injection. The following is a comparison of the core content between the 2025 and 2020 editions:
2020 Edition: Specifies its preparation method, allowing it to be used as a solvent or diluent for various formulations, but prohibiting its use in the preparation and dilution of injections. Strict monitoring of the production process is required to prevent microbial contamination.
2025 Edition: The main text is incorporated into General Rule 0261, Appendix 1, emphasizing elemental impurity assessment and control, introducing the concept and methods of microbial monitoring, clarifying microbial control measures during preparation, storage, and distribution, adding guidelines for microbial monitoring and control of pharmaceutical water, and deleting the term "test water."
2020 Edition: Requires that water for injection be obtained by distillation of purified water, must meet the requirements of bacterial endotoxin testing, and should be produced under conditions that prevent the production of bacterial endotoxins. Specific examples are provided regarding storage methods and static storage periods.
2025 Edition: Includes the Chinese monographs for this product in Appendix 2 of General Rule 0261, clarifying that it can be prepared using a purification process equivalent to distillation. It also emphasizes elemental impurity assessment and control, and microbial monitoring. The terms "static" and "for example" have been removed, and GMP regulations will prevail.
2020 Edition: Specifies its preparation and uses; filling specifications should be appropriate for clinical needs.
2025 Edition: Integrates the standard into Appendix 3 of General Rule 0261, unifying terminology and avoiding ambiguity.
