What are the differences between sterile water for injection and normal saline?

Sterile water for injection is a clear liquid without any odor. It has no side effects on pregnant women and children. It should be stored in a sealed container. Many people confuse sterile water for injection with saline. In fact, the two are

First, what are the differences between sterile water for injection and normal saline? Sterile water for injection is indicated as a solvent for sterile powder for injection, a diluent for injection solution, or a flushing agent for endoscopic surgery in various departments. Solvent for sterile powder for injection, diluent for injection solution, or flushing agent for endoscopic surgery in various departments. Before use, under aseptic operation conditions, use a sterile syringe to draw in or measure out the required amount or rinse directly. Multi-layer co-extruded film soft bags for infusion packaging, 500 ml per bag, 1000 ml per bag and 3000 ml per bag. Instructions for use: This product is a double-valve packaged product containing a dosing valve and an infusion valve. The dosing valve is equipped with a polyisoprene sealing rubber plug, and the infusion valve is a high-density polyethylene breakable valve, which is a special valve for special use. This product is a double-layer sterilized package with inner and outer bags. When using, tear it open vertically along the incision of the outer bag.

Second, normal saline refers to a sodium chloride solution commonly used in physiological experiments or clinical practice, whose osmotic pressure is basically equal to the osmotic pressure of animal or human plasma. Concentration: 0.67-0.70% for amphibians and 0.85-0.9% for mammals and humans. The concentration of sodium chloride injection that people usually use for intravenous drips is 0.9%, which can be used as normal saline. Its osmotic pressure is similar to that of human blood, and its sodium content is also similar to that of plasma, but its chloride content is significantly higher than that in plasma. Therefore, normal saline is only relatively physiological, and its purpose is to supply electrolytes and maintain the tension of body fluids. It can also be used externally, such as cleaning wounds or changing dressings. 0.9% sodium chloride solution (i.e. normal saline) can maintain the normal morphology of cells.

What is the difference between sterile water for injection and normal saline? Through understanding the above content, you can find out that normal saline is a 0.9% sodium chloride aqueous solution. Because its osmotic pressure value is roughly the same as that of normal human plasma and tissue fluid, it can be used for fluid replacement (without reducing or increasing the sodium ion concentration in the normal human body) and other medical purposes. It is also often used for in vitro culture of living tissues and cells. It is the concentration of the liquid environment in which human cells are located.