Methods of Preparation 1. Simple Solution ď Ź
Simply by dissolving the solute in most of the solvent, mixing until dissolved, then adding the rest of the solvent. The solvent may contain other ingredients that stabilize or solubilize the A.C.
e.g. Calcium Hydroxide Solution (lime water). R/ Ca (OH)2 3g water 1000 ml
N.B. the solution must kept in closed container to avoid interaction with CO2 of the atmosphere.
Uses: it is used as a vehicle in topical preparations for its soothing effect.