1. Definition and use of purified water

Purified water for the use of distillation, ion exchange method, reverse osmosis method or other appropriate method for medicinal water, which is widely used in the preparation of water for injection (pure steam); Water for the last washing of equipment, utensils and packaging materials that come into direct contact with non-sterile drugs; Initial washing of injection and sterile medicine bottles; Ingredients for non-sterile drugs; Non-sterile drug raw material refining.

2. Definition and use of water for injection

The water for injection is distilled water or deionized water obtained by distillation, so the distilled water is weighed, without pyrogen. It is widely used in sterile products in direct contact with pharmaceutical packaging materials last fine washing water; Injection, aseptic flushing agent ingredients; Aseptic API refining; Sterile apis directly contact sterile raw materials packaging materials final washing water, etc. The 2010 edition of Pharmacopoeia of the People's Republic of China, European Pharmacopoeia 7, and United States Pharmacopoeia/National Formulary have more detailed descriptions of the water quality requirements and specific uses of purified water and water for injection, which will not be repeated here.