Porosity analysis by mercury porosimetry (poro-Hg)

Why perform porosity analysis by Hg porosimetry ?

First of all, the analysis by mercury porosimetry (Hg porosimetry) allows the characterization of the surface porosity of a material according to its application. Thus, the solid material is immersed in mercury at different pressure levels.

This analysis gives several information including :

  • the volume and size distribution of the pores,
  • the distribution of the size of the particles,
  • the bulk density
  • and finally, the specific surface of the solids.

The quality and behavior of porous materials are influenced by this surface porosity. This is why, with the support and the accompaniment of a laboratory, you can study the surface porosity of your materials. Thus, as industrialists, you will gain in efficiency and quality in the manufacture of your materials. 

Surface porosity analysis by Hg porosimetry: a specific FILAB laboratory analysis

For more than 30 years, FILAB laboratory has had the experience and specific analytical equipment to meet the need for porosity analysis by Hg porosimetry on all types of materials. Thanks to a tailor-made support, FILAB laboratory analyzes your industrial problems related to mercury porosity analysis (Hg porosimetry analysis) and advises you until the interpretation of the results.

  • Powder characterization by Hg porosimetry

This study can be completed by other techniques according to your context: 

Through our three levels of services – analysis, expertise and R&D support – FILAB assists companies of all sectors and sizes in solving their industrial problems, by providing its clients with the know-how and experience of its team.

materials. It enables precise determination of the porous properties of a material or surface, and also measures pore size distribution.

The use of mercury as the test fluid ensures high accuracy of results. Thanks to this method, analysts can understand the internal structure of porous materials, enabling a better understanding of their characteristics. The analysis involves measuring the absorption of liquid mercury by a porous material at a variable pressure.

HG porosimetry is particularly useful for studying materials such as metal foams, ceramics and building materials.

Porosity is an important property in many applications, from the oil industry to construction. Porosity is a unitless physical parameter that varies between 0 and 1. The result is the volume of pores out of the total volume.

But how is this characteristic actually measured? The most common method is to use porosity tests, which usually involve using a liquid or gas to measure the amount of void or free space within a given material. These tests can be carried out at different scales, from microscopic to macroscopic, depending on the needs of the application in question. Of course, measuring porosity accurately can be a complex process, which is why calling in a laboratory is worthwhile.


Hg porosimetry is a popular characterization technique in the chemistry industry. It enables us to understand the physical and chemical properties of a material. Porosity is a key parameter in chemistry, as it can influence numerous chemical processes such as catalysis, adsorption and diffusion.

Thomas ROUSSEAU Scientific and Technical Director
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