Dialysis is commonly used for what purpose in the context of colloids?

Dialysis is a technique that is particularly effective for separating larger particles, such as colloidal substances, from smaller particles, such as ions or small molecules. This process utilizes a semipermeable membrane that allows the small particles to pass through while retaining the larger colloidal particles. In the context of colloids, dialysis is a valuable method for purification and can be used to remove unwanted smaller contaminants or solutes without affecting the larger colloidal particles. This specific ability to separate based on size is crucial in various applications, especially in biomedical and chemical fields, where the purity of colloidal solutions can significantly impact the results of experiments or treatments.