Measuring the Percent Solids of a Slurry with the AccuPyc 1330 Pycnometer

The percent solids of a slurry can be calculated readily and easily from analyses performed with theAccuPyc 1330 Pycnometer. To ensure accuracy, any pores of the solid must fill with liquid. Analyseswere performed on samples of varying percentages of solids using the following procedure. The results are shown in the following table. As shown in […]

Density Determination of Plastic Film Using the AccuPyc 1330

The AccuPyc 1330 was used to determine the density of plastic film for a Micromeritics customer. This type of film is produced by extruding polyethylene beads through various types of machines. The quality of the extruded film greatly depends on the structure of the polyethylene beads and the amount of encapsulated air in them. Various […]

Can I Calculate Density From Free Space

A frequent question is often posed by users, can density be calculated from free space measured on a gas adsorption analyzer instead of using an instrument that is designed to obtain density? This tech note will explore the possibility of using such a method and compare with results obtained by the Micromeritics AccuPyc II. Gas […]

Asphalt Density Using AccuPyc II TEC

Abstract Measuring asphalt density per ASTM Test Method D70-09 requires the use of a glass pycnometer and very tedious analysis conditions. Using this ASTM method as a guide, the density of asphalt is measured using an AccuPyc II TEC and 3.3-cc disposable aluminum cups. The density results of four different asphalt samples using the AccuPyc […]

Expanding the Material Characterization “Toolbox” for Excipient and Active Pharmaceutical Ingredient (API) Vendor Qualification

Physical characterization of pharmaceutical excipients is not only a requirement but can also provide data that can be predictive in nature regarding the performance of final dosage forms including tablets, capsules, inhaled dosage forms, transdermals, and others. Manufacturers generally provide some of this physical testing data, such as particle size. In the case of particle […]

Using the GeoPyc T.A.P. Density Analyzer to Measure Bulk Density and Packing Volumeof Mixed Food Powders

Micromeritics’ GeoPyc 1360 T.A.P.TM Density Analyzer accomplishes essentially the same measurement as a noisy, vibrating tap density device, but it operates in an entirely different manner. It also can provide additional information. Analysis with the GeoPyc is quick, easy, automatic, and quiet. To determine the T.A.P. density of a powdered or granular material, sample is […]

Sample-Weighing Precision with the AccuPyc 1330, 1-cm3Capacity

The AccuPyc 1330 Series pycnometers allow you to enter a sample mass (weight) determined to four decimal places. Four decimals are sufficient even when working with small sample masses; it is not necessary to use additional decimal places. This application note explains why. Density of a material is defined as the mass of material per […]

Envelope Density Measurements by GeoPyc 1330 and Other Methods

The mass of an object divided by its volume is its density (g/cm3). The result is called the envelope density (sometimes the bulk density) when the object’s volume is determined as if a thin film surrounded it and blocked access to pores in the object. When all pores are open and freely accessible so that […]

Bulk and Skeletal Density Computations for the AutoPore

Mercury porosimetry as performed by the AutoPore is primarily intended to measure the total volume of pores within a sample between an upper and lower limit of pore sizes with a 1% accuracy level. In addition to porosity, mercury porosimetry also is often used to measure the bulk density and the skeletal density. Relative to […]

Gas Pycnometer Analyses with Various Gases on the AccuPyc II

Helium is the most used gas for pycnometry due to its ideal behavior; However, there are times where helium can be substituted for other gases. Helium has the ability to permeate into pores that are closed from the surface and interacts with some organic materials and microporous carbons. Nitrogen is the second most common gas, […]