Hg porosimetry

Hg porosimetry determines the pore volume based on the volume of mercury injected into a specimen under increasing pressure. The volume of mercury that is pressed in directly gives the pore volume that is reached. With increasing pressures, smaller and smaller pore radii are reached. According to the Washburn equation (Washburn 1921) it is possible from this relationship to calculate - for a non-wetting fluid such as Hg - the reached pore size for each presure level an consequently a frequency distribution of the pore radii:

D = (1/P)*4γ*cosφ

where D is pore diameter, P is the applied pressure, γ the surface tension of mercury, and φ the contact angle between the mercury and the sample.

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05.05.2025 · DGMK Spring conference 2025

DGMK/ÖGEW spring conference 2025 goes on tour and we are part of it!

Meet us on booth 2, we look forward to a lively exchange in Papenburg.

 

03.10.2024 · Project HENRI

Gesteinslabor Dr. Eberhard Jahns is project and research partner within the HENRI (Hydrogen Energy Reservoir) project.

Main focus of us is the impact of H2 on the cap rock. Besides other parameters, we determine the capillary threshold pressure with different gases and gas mixtures.

First preliminary results could be presented at the 2nd HENRI conference.

 

28.07.2023 · Find us in EEK

Recently, the article "Determination of capillary threshold pressure with hydrogen gas" was published in the journal EEK.
Article from the journal EEK 01/2023

01.12.2022 · 

Gesteinslabor has successfully completed the development of a new test rig to determine the capillary threshold pressure with hydrogen.