The density of a substance is defined as the mass per unit volume. The density parameter is one of the fundamental physical properties that characterizes a substance. Relative density can be defined as the ratio of the density of a substance to the density of a standard substance. Using our density meter in our laboratory, we measure the condition of the sample to be tested, its operating temperature range, and the measurable capacity/volume range in accordance with European Pharmacopoeia 2.2.5.