Colloidal solution, occasionally identified as a colloidal suspension, is a mixture in which the substances are regularly suspended in a fluid. A colloid is a minutely small material that is regularly spread out all through another substance.Though colloidal systems can occur in any of the three key states of matter gas, liquid or solid, a colloidal solution unambiguously refers to a liquid concoction. The distinguishing feature between a true concoction and a colloidal concoction is fundamentally the dimensions of the constituent parts. In a true solution, for example, salt water, NaCl molecules are completely mixed into water, and the concoction can pass through a semi-permeable film without getting divided. In a colloidal solution, on the other hand, the units are bigger and don’t liquefy, but come to be equally dispersed all through a liquid. As such these units will not pass through a membrane as the liquid does.To understand more about solutions refer here: