Porometer (Porometry)

Facility/equipment: Equipment

    Description

    Introduction

    The porometry allows determination of the pore size and pore size distribution of pores that are actively contribution to the filtration process. The technique gives quantitative information on the membrane
    morphology.

    Principle
    Capillary flow porometry (CFP) uses the displacement of a
    wetting liquid inside a porous structure by means of an
    inert gas flow. The pore size can be calculated according to the applied pressure with the Young-Laplace equation: rρ = 2 * γ * cos(θc) / ΔP

    Pores open as pressure increases starting with the biggest pores. Once the liquid is out of the pores, the dried membrane is measured to ensure no morphology change.

    Applications

    • Microfiltration/Ultrafiltration membrane characterization
    • Membrane permeability
    • Material defects assessment

    Conditions determination with:

    • PES (Polyethersulfone) membrane disk (25 mm) • Perfluoroether (Porefil®) as wetting liquid

    Details

    NameProlux 500
    NamePorolux 500
    ManufacturersIB-FT

    Fingerprint

    Pore size
    Membranes
    Liquids
    Microfiltration
    Laplace equation
    Ultrafiltration
    Flow of gases
    Wetting
    Defects
    polyether sulfone