把盛有含离子或分子杂质的胶体的容器放在溶剂里，从而使离子或分子从胶体溶液里分离出来的操作，叫做渗析。盛这种混和液体的容器可以用玻璃纸、肠衣、鸡鸭蛋内膜作为半透膜。从价值观念及实验操作方便与否考虑用鸡鸭蛋壳作这种容器最佳。制作时，先在生蛋的尖端，轻轻地敲一? The separation of ions or molecules from a colloidal solution by placing a container containing colloids containing ions or molecular impurities in a solvent is called dialysis. Containers containing this mixed liquid can be made of cellophane, casings, and duck eggs as a semipermeable membrane. It is best to use chicken and duck eggshells as the container for consideration of the value concept and the convenience of experimental operation. At the time of production, first gently knock at the tip of the raw egg?