注射液、滴眼剂、滴鼻剂等用于血管内、粘膜组织的溶液的渗透压应与血浆、泪液等体液的渗透压相等.如若不等时,常成为疼痛、刺激的原因,有时也能产生溶血作用及红血球皱缩等不良影响。尤其是用量较大的输液剂及洗眼液更应注意其渗透压问题。调制等渗溶液时,用直接测定渗透压的方法调配是准确的。但实际上很困难。工作中多用冰点降低 Injectable solutions, eye drops, nasal drops and other solutions for intravascular and mucosal osmotic pressure should be equal to the osmotic pressure of plasma, tears and other body fluids .If not, often become the cause of pain, irritation, and sometimes Can produce hemolysis and red blood cell shrinkage and other adverse effects. In particular, a larger amount of infusion solution and eyewash should pay attention to its osmotic pressure. Modulation isotonic solution, the method of direct measurement of osmotic pressure deployment is accurate. But in fact very difficult. Use more freezing point of work to reduce