Micromeritics's Accupyc II 1340 gas pycnometer provides skeletal volume and density measurements on a variety of materials.
In addition, its Geopyc 1360 pycnometer determines the envelope volume and density of monolithic samples as well as the bulk volume and density of powered materials.
The skeletal volume of a solid body excludes pores as well as the void spaces between particles.
Envelope volume includes all pores and voids.
Their combination also allows a scientist to accurately calculate per cent porosity and total pore volume of a body.
