Product Overview

The AccuPyc gas pycnometer from Micromeritics is trusted around the world to provide the most reliable determinations of True or Skeletal (Absolute) Density
of solid materials and slurries. With the highest available accuracy and repeatability, the Accupyc system is now faster and even easier for any operator to use.

With advanced temperature control (to ±0.025 °C or better), AccuPyc enables the most repeatable, reliable density measurement every time. The system equilibrates faster and exchanges gas more efficiently leading to shorter run times. Solid density can be measured with Nitrogen, Air, Argon and more with no additional steps, calibrations or compromise. An analysis temperature range of 4°C to 60°C – the widest available – empowers users to measure density at their process temperature, whether replicating refrigerated biopharmaceutical storage or elevated-temperature manufacturing.

A new hinged, self-aligning lid provides frustration-free operation and constant chamber volume, ensuring reproducibility. The new Breeze touchscreen interface provides intuitive instrument control and results review for users with any level of experience. The integrated MIC Net centralises density data across the lab, including forward compatibility with existing AccuPyc systems. A wide analysis volume range from 100 cm3 to 0.1 cm3 permits large volumes that eliminate sampling error in heterogenous materials through low volumes that conserve scarce materials. These features, plus new capabilities like PowderSafe mode and the stored Method Library make the AccuPyc the easiest pycnometer in the world to operate.

Whether testing light powders, granules, foams, or slurries, operating conditions can be defined, stored in the Method Library and recalled the next time it’s needed. 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.

The Accupyc will benefit scientists who develop and optimise materials in fields like battery anodes and cathodes, additive manufacturing, catalysis, ceramics, pharmaceuticals, and more.

HOW GAS PYCNOMETRY WORKS

Using gas pycnometry, a sample is placed in a chamber of known volume, which is sealed and pressurised. 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.