Several techniques are used to measure porosity, including:
Nitrogen adsorption-desorption: This technique measures the volume of nitrogen gas adsorbed and desorbed by the material, providing information about the surface area and pore size distribution. Mercury intrusion porosimetry: This method involves the intrusion of mercury into the pores under controlled pressure, allowing the determination of pore size distribution and total porosity. Scanning Electron Microscopy (SEM) and Transmission Electron Microscopy (TEM): These imaging techniques provide detailed visualizations of the pore structure at the micro and nanoscale.
