Sodium Chloride 0.9% 500ml is a sterile saline solution containing 0.9% sodium chloride (salt) in water, commonly used for medical purposes. It is an isotonic solution, meaning it has the same salt concentration as the body's cells, making it safe for use in various medical treatments. This solution is commonly used for hydration, cleaning wounds, as a flush for intravenous lines, or to dilute medications for injection. The 500ml bottle provides a sufficient volume for these purposes in clinical or home care settings.