Water injection or water for injection, as an abbreviation (WFI), for a super high quality, and no pollution, is significant.Sterile species used to make solutions that are administered by injection.are used. Prior to injection of this substance other substances must be added to the to adjust the tonality of the solution. It can be administered intravenously intramuscularly or subcutaneously. A non-sterile sample may be used in the production of products that are sterilized at the end..< < > if this substance is injected into a vein without tunicity adjustment، it may lead to breakdown of red blood cells and can then lead to kidney problems. ab injectable is generally produced by distillation or reverse osmosis. It should contain less than one milligram of any substance except B per 100 ml. There are also other versions of this product that contain agents that stop bacterial growth.