ACCUPYC GAS PYCNOMETER FOR TRUE DENSITY OF SOLIDS
The AccuPyc gas pycnometer from Micromeritics is trusted around the world to provide the most reliable measurements of true density. More labs choose an AccuPyc than any other commercial gas pycnometer. The AccuPyc delivers the highest available accuracy and repeatability in a system that is fast and easy for any operator to use.
GAS DISPLACEMENT PYCNOMETRY
Gas pycnometry is used to determine the true — or skeletal — density of solid materials and slurries. A sample is placed in a chamber of known volume, which is sealed and pressurized. The gas fills the empty spaces within and between the sample particles. The sample chamber is then expanded to an adjoining reference chamber of known volume.
The change in pressure is used to calculate the volume of the sample. True density is calculated from the sample mass and the volume it occupies. This method is useful for determining the true density of materials, even those with small pores and irregular shapes.
DEFINING DENSITY
The AccuPyc provides an accurate determination of the True (Absolute) Density by gas pycnometry. This is important for porous and particulate materials because it excludes empty spaces associated with pores and interparticle voids. For materials with closed pores, those pores are included in the volume measurement and the density reported is a Skeletal (Apparent) Density. The GeoPyc is a helpful complement to the AccuPyc as it directly measures the: Bulk Density, the Envelope Density including pores, and the T.A.P. density incorporating consolidation stresses. Bulk and envelope density measurements from the GeoPyc can be used with true density from the AccuPyc to report pore volume and porosity.
| Cell Volume | ||
| Nominal | 10 cm3 | 100 cm3 |
| Available Inserts | 0.1 cm3, 1 cm3, 3.5 cm3 | 10 cm3, 35 cm3 |
| Specification | ||
| Temperature | TS: 20 °C ± 0.025 °C
ATC: 4 °C to 60 °C ± 0.025 °C |
|
| Volume Accuracy | 0.02% | |
| Volume Repeatability | 0.01% | |
| W x D | 26.5 cm x 43.0 cm | |
| Features | ||
| Hinged Self-Aligning Lid | ||
| PowderSafe Mode | ||
| MIC NET data and method synchronization | ||
| Managed Method Library | ||
| WiFi Connectivity and 3 USB ports | ||
| USB Balance Integration | ||
| Vacuum and Pulse Sample Preparation | ||
| FoamPyc Methods |
NOT JUST FAST, THE FASTEST
A more stable system that equilibrates faster and exchanges gas more efficiently leads to shorter run times. Complete measurements in 20% to 30% less time than any other pycnometer.
GET THE SAME RESULTS ANYTIME, ANY PLACE WITH ACCUTEMP
Every AccuPyc includes AccuTemp that guarantees temperature stability to ±0.025 °C or better. The most stable temperature ensures the most repeatable, reliable density measurement every time.
UNPARALLELED MEASUREMENT GAS FLEXIBILITY
Measure solid density with nitrogen, air, argon, and more with no additional steps, calibrations, or compromise. Advanced technology proven in Micromeritics’ industry leading gas adsorption instruments enables you to switch gases and save helium when testing non-microporous and non-adsorbing materials.
NOT JUST EASY, THE EASIEST
A hinged, self-aligning lid* makes operation easy and error-free for every user.
Swing. Turn. Done.
Combined with an intuitive control and display, the AccuPyc is the easiest instrument you will ever add to your lab.
POWDERSAFE IS WORRY-FREE
PowderSafe mode keeps your sample and instrument safe when testing light, fluffy powders. Pressurizing the reference chamber before the sample chamber eliminates the potential for elutriation when measuring fine powders. Select it in your stored method and never worry again.
NOT JUST ACCURATE, THE MOST ACCURATE
Every element of the AccuPyc design enhances accuracy and reduces variability: the most stable temperature control, cutting-edge gas modeling, the most repeatable lid closure, and more. Superior measurements for accurate results you can trust.
THE WIDEST RANGE OF MEASUREMENT TEMPERATURES
Precision control from 4 °C to 60 °C empowers you to measure density at conditions that match your process. AccuTemp is a quiet, air-cooled thermoelectric temperature control system.
SEAMLESS DEVICE CONNECTIVITY
Simplify your workflow and avoid transcription errors when you connect your lab balance directly to the AccuPyc using a USB connection. Sample mass is transmitted directly, removing a manual step and a potential for user-error. The AccuPyc can also integrate with other lab input devices like a keyboard or barcode reader to streamline user interaction.
ULTIMATE VOLUME FLEXIBILITY
SCARCE SAMPLES
Low measuring volume to conserve valuable resources.
HETEROGENEOUS MATERIALS OR LARGE PIECES
High volume to ensure a representative measurement.
The AccuPyc supports a wide range of measurement volume — without sacrificing accuracy or adding complexity — with simple volume insert kits.
MEASURE RIGHT, WITHOUT QUESTIONS
Different materials call for different operating conditions — whether testing light powders, granules, foams, or slurries. Define the conditions that are right for your process and store those conditions in the Method Library. Recall the next time you need it, so you always measure the same way — the right way.
RUN, REVIEW, REPORT – AT YOUR FINGERTIPS
The intuitive Breeze touch interface gives you everything you need at your fingertips. Perform a measurement, review past results, send a report to print or to LIMS with the touch of a finger. Save space in your lab by eliminating a PC from the bench. Prefer to work from a PC nearby or in your office? You can do that too! Execute measurements, view status of multiple instruments, or review results…anywhere.
ACT AS ONE WITH MIC NET
Never hunt for a past result or worry that your method settings are out of date. MIC Net is an instrument-to-instrument network that shares and stores results and methods across devices, including forward compatibility with the AccuPyc that is in your lab today.
FOAMPYC
The FoamPyc methods follow ASTM and ISO methodologies to determine open and closed cell content, compressibility and cell fracture with chemically and mechanically formed cellular polymers such as PVC, polystyrene and polyurethane.
BATTERY MATERIALS
The density of battery cathode and anode materials is directly related to their porosity, which affects the amount of energy that can be stored per unit volume. Density is also an effective indicator of the purity and composition of the electrode materials, which is crucial for increasing battery capacity.
CATALYSTS
Determine correct composition of catalyst supports and finished products including crystallinity, porosity, and formulation.
COATINGS
Determine total solids content of liquid coatings to predict coverage. Monitor density of dry pigments and powder coatings to verify composition. Detects density differences in cast films that indicate changes in crystallinity and mechanical performance.
METAL POWDERS
Track the purity of raw materials through density measurement. Detect the presence of occluded porosity developed during sintering processes that impact final product strength.
PHARMACEUTICALS
Monitor and control composition of API’s and excipients by measurement of product density. Differences in polymorphic, hydrated, and amorphous forms of products, as well as purity, can be detected through density measurements.
POLYMERS AND COMPOSITES
Determine the ratio of open and closed cell foams, which impacts heat transfer, gas transport, sound damping, mechanical energy dissipation, and buoyancy. Differentiate relative amounts of crystalline and amorphous phases of thermoplastic polymers. Design and produce composite materials with precise control of fiber loading, void content, mixing uniformity, and fiber impregnation.
