Pharmaceutical density meters are useful in evaluating the material porosity of a solid drug substance or determining the specific gravity of liquid samples. Pharmaceutical density meters include pycnometers, which measure absolute, envelope, and bulk density.

Density is used in our everyday lives all the time for example we use density for balloons since helium gas ( the gas from balloons) has a lower density than the air, thus making it float. We use density for transports like boats since boats depend on their density to stay a float).

Density of mass

• Density, mass per unit volume.
• Area density or surface density, mass over a (two-dimensional) area.
• Linear density, mass over a (one-dimensional) line.
• Relative density or specific gravity, a measure of density in comparison to the density of something else.

True density (ρp), defined as the quotient of mass over the volume of a sample, without considering pores in the material (true volume). In the case of granular materials, the terms particle density and particle volume are used.

997 kg/m³

What is the difference between density and bulk density? – Density is a concept defined for any substance, while bulk density is only used in cases where the particles or chunks of matter are loosely packed with space for air within.

The formula for bulk density is (mass of dry soil) / (total volume of soil), 1 – (bulk density/particle density) for porosity, and (volume of pores) / (volume of solids) for void ratio.

Specific gravity is in direct relationship with density. It is the ratio of an object’s density, and its contact substance. For example, if you want to place an object in water, the specific gravity would tell you if it would float or not.

The bulk density of a powder is determined by measuring the volume of a known mass of powder sample, that may have been passed through a sieve, into a graduated cylinder (Method A), or by measuring the mass of a known volume of powder that has been passed through a volumeter into a cup (Method B) or a measuring vessel …

Soil density is the relation between the mass and the volume of a dry soil sample. In its determination, an Uhland Sampler can be used, whose cylinder is inserted in the soil, in the medium depth of the soil layer which is explored by the roots of the plants.

Bulk density is also used to convert between weight and volume of soil. It is used to express soil physical, chemical and biological measurements on a volumetric basis for soil quality assessment and comparisons between management systems.