A critical attribute that contributes to the quality of a manufacturing process is the density of the powdered or solid material. Density gives information about the amount of material in a given volume which can offer a prediction of how the powdered material will pack. Density also gives information on the amount of hollow cavities and/or porosity that could be present in a solid material. When characterizing a material using density, it is important to know what type of density is being determined based on how the volume is defined. In this study, we explore and compare Skeletal Density, Bulk Density, Envelope Density, and T.A.P. Density for some common materials. These densities are determined by gas displacement, solid displacement, and liquid displacement using modern analytical instruments.
Jack G. Saad
Jack G. Saad earned his ACS Certified BS Chem degree in chemistry from the University of Georgia. As an undergraduate, he worked with a variety of tungsten compounds to induce photo-initiated polymerization of cyanoacrylate using specific wavelengths of visible light, an application used in the adhesive industry. He began his career at Micromeritics Instrument Corp. as a particle size analyst for their contract laboratory service where he developed protocols to obtain particle size distributions using various techniques. He spent seven years in the pharmaceutical industry in various formulation roles to include raw materials testing, manufacturing support, research and development, and quality control.He rejoined Micromeritics in 2011 in a technical and scientific support role for various characterization techniques. He also works on collaborations with other organizations and universities to perform research support leading to publications in peer reviewed journals in various fields as well as participate in industry organizations as a subject matter expert, including the United States Pharmacopeia (USP) and the Accrediting Council for Continuing Education and Training (ACCET).
Areas of analytical expertise include: particle size, zeta potential analysis, density measurements, chromatography
