Sterile Saline and Water is purified using an advanced six stage water purification process Reverse Osmosis, Deionization, Ion Exchange, Multi-Wavelength Ultraviolet Bacterial Elimination, Micro Filtration and Post Gamma Radiation Sterilization. This allows SELECT Sterile Saline and Water to meet or exceed USP Standards. Purified with an advanced multi-stage process using Reverse Osmosis. Sterile and ready to use. Multiple package options for customer convenience.