The main component of physiological saline is sodium chloride, with a molecular weight of 58.44 and a molecular formula of NaCl. 0.9% normal saline is a 0.9% NaCl solution, abbreviated as SPSS. Because its osmotic pressure is equal to that of human plasma, it is a commonly used salt solution for in vitro culture of living tissues and cells. This product has been sterilized by filtration can be used directly in aseptic operations.
