colloidal platinum in water is negative, in a mixture of water and alcohol, positive.
They also found that the cocain was not present in a colloidal form.
Did you ever realize that practically all industrial chemistry is colloidal in its nature?
This is undoubtedly a colloidal suspension of the starch in water.
This is probably due, in most cases at least, to the action of the electrolyte upon the colloidal condition of the enzyme.
Proteins exist in colloidal form and are the seat of all vital functions.
Enzymes perform their catalytic functions by reason of their colloidal form.
In the case of soda soaps the colloidal character increases with the molecular weight of the fatty acids.
Generally speaking, most enzymes are colloidal in form and, hence, do not diffuse through membranes such as the cell-walls.
By the second, colloidal tungsten was produced by operating an arc between tungsten electrodes under water.