Reconstitution is the process of mixing a liquid and powder together to form a suspension. Geo- metric dilution is a technique used in mixing two ingredients of unequal quantities, in which one begins with the smallest quantity and adds an equal quantity of the ingredient having the larger amount; the process continues until all of the ingredients are used. Blending is an act of combining two substances together. Levi- gation is trituration of a powder drug with a solvent, in which the drug is insoluble with the solvent. Trituration is a process of rubbing, grinding, or pulverizing a powder to create fine particles.