Density
When to choose this option: You need the density of a solid, powder or shaped piece for quality control, porosity or formulation.
Density is the ratio of a sample’s mass to its volume, but because many materials contain pores, cracks and inter-particle voids, there are several definitions of density depending on what is included in the measured volume. For this area, Micromeritics offers two complementary instruments: AccuPyc for true (and skeletal) density by gas pycnometry, and GeoPyc for envelope and T.A.P. density of shaped pieces and powders, without the use of hazardous materials.
Which instrument should you choose?
- True (true/absolute) density – excludes open and closed pores as well as inter-particle voids → AccuPyc (helium pycnometry)
- Skeletal density – excludes inter-particle voids and open pores, but includes closed pores → AccuPyc
- Envelope density – includes open and closed pores, excludes the space between pieces → GeoPyc
- Bulk (bulk/apparent) and T.A.P. density – density of freely poured or compacted/tapped powder → GeoPyc (T.A.P. option)
