All living things exist in the colloidal form. By colloidal, Graham meant those materials which readily crystallize and have the vital function of diffusing readily through animal membranes, as opposed to amorphous masses, which do not diffuse readily or at all through animal membranes, and cannot therefore be assimilated. Prior to that, in 1843, researcher, Seimi, became the first to systematically investigate colloids. Michael Faraday , another notable English chemist, in 1857 produced Colloidal Gold. A sample of his colloidal formula can be seen in a London museum.
Loyphilic solutions are of high molecular weight compounds.
They are found in animal and plant fluids. Common examples of Association colloids are soaps and detergents. The molecules form clusters called micelles , the interior of which dissolves oily material, keeping it in stable suspension. The blood stream has many electrolytes , such as calcium, potassium, and sodium. These are also colloidal, carrying electrical charges.