Sterile Water for Injection
[NoteFor microbiological guidance, see Water for Pharmaceutical Purposes 1231. ]
Sterile Water for Injection is prepared from Water for Injection that is sterilized and suitably packaged. It contains no antimicrobial agent or other added substance.
• Oxidizable Substances
Sample: 100 mL
Analysis: Add 10 mL of 2 N sulfuric acid, and heat to boiling. For Sterile Water for Injection in containers having a fill volume less than 50 mL, add 0.4 mL of 0.02 M potassium permanganate, and boil for 5 min; where the fill volume is 50 mL or more, add 0.2 mL of 0.02 M potassium permanganate, and boil for 5 min. If a precipitate forms, cool in an ice bath to room temperature, and pass through a sintered-glass filter.
Acceptance criteria: The pink color does not completely disappear.
• Water Conductivity, Sterile Water 645: Meets the requirements
• Particulate Matter in Injections 788: Meets the requirements
• Sterility Tests 71: Meets the requirements
• Bacterial Endotoxins Test 85: Less than 0.25 USP Endotoxin Unit/mL
• Packaging and Storage: Preserve in single-dose glass or plastic containers of not larger than 1-L size. Glass containers are preferably of Type I or Type II glass.
• Labeling: Label it to indicate that no antimicrobial or other substance has been added, and that it is not suitable for intravascular injection without first having been made approximately isotonic by the addition of a suitable solute.
• USP Reference Standards 11
USP Endotoxin RS
Auxiliary Information Please check for your question in the FAQs before contacting USP.
USP35NF30 Page 5040Pharmacopeial Forum: Volume No. 35(5) Page 1178