GeoPyc 1365 Density Analyzer
GeoPyc 1365, Micromeritics (USA) - the latest device for determining the apparent density of irregularly shaped porous materials, as well as the bulk density of powder and granular materials at various pressures.
Density of a solid sample is the mass of the sample divided by its volume. When determining the density of a substance two types of density are distinguished - true and apparent. Unlike true density which excludes the volume of open pores from the total volume of the sample apparent density is the mass of the sample divided by its volume including the pore volume. For a solid these two densities are the same but for porous ones they differ. GeoPyc 1365 measures the apparent density of irregularly shaped porous materials and powder materials with a particle size of at least 2 mm. This information is very useful for characterizing catalysts, insulators, ceramics, powder metallurgy materials and other industrial materials. Density determination methods are typically labor intensive using wax or other inert pore filling or methods using toxic mercury. Method used in the GeoPyc 1365 tool has a number of significant advantages: it is fast, automatic, non-destructive and non-toxic.
Density measurement method in the GeoPyc 1365 is based on a unique technology. Sample volume including pores and voids is determined by placing it in a quasi-liquid medium consisting of small polymer spheres. This medium has a high fluidity and densely envelops the sample from all sides. It's called DryFlo. Device captures the data, makes the necessary calculations and displays the data on a printer or screen. If you enter the value of the absolute (true) density of the same sample (obtained on an AccuPyc 1330 helium pycnometer), then the device provides data on total porosity and specific pore volume.
In addition to the apparent density, the GeoPyc 1365 pycnometer allows you to determine the bulk density of powder materials at various pressures. Bulk density of powdered and granular materials is often measured by filling a container of known volume (or a glass graduated cylinder) with a powder sample of known mass and placing it on a special vibrating table that produces a certain number of shakes. Volume of powder obtained (volume "tap") is an important characteristic of powder and granular materials and is used to determine the so-called packed bulk density ("TAP-density" according to ASTM B527-81). Knowing this density (shaking) is especially useful for industries dealing with the loading, packaging and transport of granular materials. With GeoPyc 1365 you can perform very fast, automatic and (unlike vibration-based instruments) completely silent analysis of packed density. Known amount of powder material is placed in the instrument chamber which is closed by a piston. Chamber with the piston is placed in the instrument and then the automatic analysis starts. During analysis, the instrument shakes the chamber and pushes the piston into it until a predetermined powder compression force is reached. Device allows to adjust the applied force by setting either force (in Newtons) or pressure (in N/cm2). Special force sensor allows to obtain the required compression ratio with high reproducibility.
Features and benefits:
● High accuracy and reproducibility of analysis results
● High speed of analysis (several minutes)
● Small size of the device
● Fully automated data collection and presentation of results
● Media not hazardous to human health is used
● Non-destructive analysis
● Expanded options for calibration and selection of analysis conditions
●; Wide choice of sample chambers