GeoPyc 1365

Measures the envelope volume and density of formed pieces without use of hazardous materials

Highly accurate and reproducible results.
Fast operation in a small bench-top instrument.
Fully automated data acquisition and reporting.
Non-destructive analysis maintains sample integrity.
Intelligent touch panel for ease of operation and reporting.
Available Trans-Axial Pressure (T.A.P.) analysis option to determine compressed bulk density of powders, complying with ASTM Test Method D8097.
When combined with skeletal density, provides pore volume and porosity of formed pieces, such as roller compactor ribbons and sintered solids

The GeoPyc automatically determines the volume and density of a solid object by displacement of DryFlo, a solid medium. The medium consist of a narrow distribution of small, rigid spheres that have a high degree of flow ability and achieve close packing around the object under investigation. The particles are sufficiently small that during consolidation they conform closely to the surface of the object, yet do not invade pore space.

Features and Benefits

Provides rapid, controlled-compression analysis with results in as little as 15 minutes.
Can be used with formed pieces to provide envelope density, as well as with powders to provide compress bulk density.
Easy cleaning and disposal of analyzed materials since they is free of hazardous materials and waste.
Simplified operation through fully automated instrument control.
Can be used stand-alone, or can provide results via email or through a web browser.
Ability to program, store, and reuse large number of analysis method files.
Easy to keep operational with user-replaceable piston tip.
Very low operating costs since hazardous materials are not needed.
Data available as printed reports, or in downloadable CSV format.

Specifications

Reproducibility

When sample volume is at least 25% of sample holder volume: Typically ± 1.1%

Pressure Measurement

12.7-mm (0.50 in.) ID	Sample volumes between 0.3 cm³ and 0.8 cm³
19.1-mm (0.75 in.) ID	Sample volumes between 0.8 cm³ and 2.4 cm³
25.4-mm (1.00 in.) ID	Sample volumes between 2.4 cm³ and 5.3 cm³
38.1-mm (1.50 in.) ID	.Sample volumes between 5.3 cm³ and 13 cm³
50.8-mm (2.00 in.) ID	Sample volumes between 13 cm³ and 25 cm³

Physical

Height	11 in
Width	22 in
Depth	15 in
Weight	42 lbs

Electrical

Voltage	85 to 265 VAC
Frequency	47 to 63 Hz
Electrical Power	95 VA

Environment

Temperature	15 °C to 35 °C
Humidity	20% to 80% non-condensing

Technology

The GeoPyc automatically determines the volume and density of a solid object by displacement of Dry Flo, a solid medium. The medium is a narrow distribution of small, rigid spheres that have a high degree of flow ability and achieve close packing around the object under investigation. The particles are sufficiently small that during consolidation they conform closely to the surface of the object, yet do not invade pore space.

Repeatability and reproducibility are achieved by a controlled method of compaction. The sample cell in which the dry medium is placed is a precision cylinder. A plunger compresses the powder as the cell vibrates; the force of compression is selectable and, therefore repeatable from test to test. A preliminary compaction with only the displacement medium in the cell establishes a zero-volume baseline.

The sample is then placed in the cylinder with the dry medium and the compaction process is repeated. The difference in the distance ht the piston penetrates the cylinder during the test and the distance h0 it penetrates during the baseline procedure (h=h0– ht ) is used to calculate the displacement volume of the medium using the formula for the volume of a cylinder of height h, V =π r2h

The GeoPyc is operated from an intelligent touch screen. Data acquisition and reporting are fully automated for convenient incorporation in LIMS or other data concentrating systems. A variety of sample chambers is available to accommodate a wide range of sample sizes. After the analysis, a light shaking or dusting completely removes the Dry Flo so the samples can be reused or retested.

The GeoPyc has multiple operating modes including full blank, computed blank, and reference solid calibration with variance, which allows you to optimize speed and accuracy for your individual needs. During analysis, indications of progress and preliminary results make it possible to track what is occurring.

Configuration

T.A.P. Density Option

The GeoPyc T.A.P. density option obtains precise results comparable to conventional tap density analyzers, only it does it faster, quieter, and with a higher degree of reproducibility.

When equipped with the T.A.P. Density option, the GeoPyc measures the packing volume and calculates the bulk density of granular and powdered samples, including pharmaceutical and electrochemical materials, under a wide range of compaction conditions.

To determine T.A.P. density, the sample chamber is rotated and agitated while a precise specified force is applied to the sample. A force transducer measures the consolidation force in Newtons and the distance over which the consolidation piston and plunger travel is measured in steps. The user specifies the force applied and the number of consolidations per analysis. The GeoPyc averages the measurements from each consolidation and automatically calculates volume and density, and reports the results in cm3 and g/cm3

Accessories

Software

The GeoPyc has multiple operational modes that are accessed through the instruments smart touch screen. Operating modes including full blank, computed blank, and reference solid calibration with variance, which allows you to optimize speed and accuracy for your specific application. During analysis, indications of progress and preliminary results make it possible to track what is occurring. Sample specific information can be entered into the analysis reports. Available Reports: Envelope Density, Volume Calibration, Blank Report, Force Calibration, Instrument Log