The composition and ingredients of raw materials and the product are quantified to ensure the correct proportions are contained in the product.
By measuring mass of the product, the uniformity of active ingredients is determined.
Carbon atoms composing organic compounds within the tested material are quantified.
Species and population of microorganisms that exist in the raw materials or product are determined.
Time required for the product to dissolve in test solutions is determined.
The rate of the product's active ingredients to elute into test solutions is determined.