advancing sorption science
A view of the UltraPyc-1200e

Instruments for measurement of Density

Gas Pycnometry

Gas pycnometry measures the quantity of gas displaced by a sample. Helium is typically used, for its inertness and its rapid diffusion. An independent measurement of the weight of the sample gives the true density, also known as helium density, skeletal density(for porous materials), or particle density(for granular and powder materials).

  • UltraPyc-1200e: a fully automated gas pycnometer, offering simple, rapid measurements with a minimum of user intervention.
  • PentaPyc-5200e: automated multiple sample gas pycnometer, with the same simplicity of use as the Ultrapyc, but allowing a very high sample throughput.
  • MultiPycnometer: an extremely flexible, manually operated gas pycnometer, allowing the user to completely control the pycnometric measurement.
  • StereoPycnometer: a low cost manually operated gas pycnometer.

Cellular Foam characterisation

For cellular foam materials, the gas pycnometry measurement technique can be adapted to quantify the open and closed-cell content of the material. These parameters are very important for many applications of cellular materials, because they affect the thermal, acoustic and absorption properties of the foam. Variable pressure measurements allow analysis of cell compressibility and cell fracture.

  • UltraFoam-1200e is a fully automated instrument, which is fully compliant with ASTM D6226 "Standard Test Method for Open Cell Content of Rigid Cellular Plastics."
  • The PentaFoam-5200e: is also available for high throughput applications.

Tapped Density of powder materials

For powders and granular materials, the volume occupied by a given weight of product depends strongly on the degree of compaction. This bulk density is generally highly variable and depends on the history and storage conditions of the material. To obtain the Tapped Density or Tap Density the material is subjected to a mechanical treatment designed to give a reproducible degree of compaction.

  • AutoTap: gives rapid measurements of powder tapped density, and is compliant with a wide range of international standard tests for different materials.
  • The two station Dual-AutoTap gives double the throughput.


If you would like to know more, we would be delighted to discuss your application with you.

For brochures, detailed specifications or pricing information, please contact us via our webform, or by telephone at the number below.

Mercer Instruments
21 rue Hector Grangerat
Passy 74190
France
+33(0)4 50 47 70 78