fyllstofftetthet

Fyllstofftetthet, also known as bulk density, is a measure of the density of a solid material such as a powder, granule, or pellet. It is defined as the mass of the material divided by its volume, including the volume of the interstices between the particles. This is in contrast to particle density, which is the mass of the material divided by its geometric volume, ignoring interstices.

Bulk density is an important parameter in various fields, including pharmaceuticals, food science, and civil engineering. In pharmaceuticals, it is crucial for determining the dosage form and the amount of active ingredient in a tablet or capsule. In food science, it is used to assess the quality of ingredients and finished products. In civil engineering, it is used to determine the compaction of soils and other materials.

Bulk density can be affected by several factors, including particle size, shape, and distribution, as well as the method of measurement. It can be measured using various techniques, such as the core cutter method, the graduated cylinder method, and the gas pycnometer method. Each method has its advantages and limitations, and the choice of method depends on the specific application and the nature of the material.

Bulk density is typically expressed in units of mass per volume, such as grams per milliliter (g/mL) or kilograms per cubic meter (kg/m³). It is an important quality control parameter, as it can indicate the uniformity and stability of a material. However, it is not a definitive measure of quality, and other tests may be required to fully characterize a material.