Our porometers are indispensable, both for R&D and quality control purposes, to characterize the pores of a wide range of materials used in all kinds of filtration and separation processes.
Applications
Polymeric membranes
Polymeric membranes are widely used in many filtration processes. The degree of selectivity of a membrane depends, amongst others, on the membrane pore size and pore size distribution. Therefore, the correct determination of pore sizes and pore size distribution is vital.
Gas-liquid and liquid-liquid porometry are exceptionally well suited for measuring polymeric membranes. Both flat sheets and hollow fibres membranes can easily be analysed with these techniques. Given its accurate determination and correct representation of pore sizes, it’s no wonder that our POROLUX™ and POROLIQ™ porometers are the most wanted brand in membrane labs worldwide.
Our dedicated products for this application:
Nonwovens
Nonwovens are very commonly used as filtration media. Typical examples are air-conditioning, masks, water purification, blood filtration, pharmaceutical filtrations, and many others.
Nonwovens are often characterized by how they are produced (spunbond, meltblown, etc) and their weight, leading to differences in strength and durability. But also the pore sizes are an influential factor in selecting the most suitable nonwoven for the different filtration requirements.
Capillary flow porometry is an easy and straightforward way to characterize the pores in nonwoven filter media. On top of that, our porometers generate fast & reproducible results. Especially our POROLUX™ Cito L is a well established instrument within the nonwoven media industry. Also check out our presentation Measuring Pore Size (distribution) in nonwoven filter and separation media
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Ceramics
Ceramic filters are usually hard and rough in surface but porous inside the structure. Porous ceramic tubes, sheets, membranes, etc., have long been used for various industrial applications. Such materials have great resistance to thermal and physical shock, low-pressure drop, and weight. Therefore, they are indispensable in many filtration applications.
Our porometers can determine the pore sizes in porous ceramic media made in any form. If the POROLUX™ cannot measure it, no instrument can.
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Metals
Metal-based filter media are available in many different shapes and structures. They are very often used in filtration and separation applications because of their high temperature and corrosion resistance, high porosity and permeability, as well as their high mechanical strength and durability. The characteristics of the pore structure, such as pore sizes and pore size distribution, govern the filtration properties of all filter media.
The pore sizes and pore size distribution of metal-based filter media are easily measured with our gas-liquid POROLUX™ porometers.
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Hollow fibers membranes
Hollow fiber filters are used in many different filtration applications, and determining the pore sizes is of crucial importance. An extra challenge is that hollow fiber membranes are often delicate and subject to stretching, deformation, and even rupture. Therefore, selecting the proper instrument to properly measure your hollow fiber membrane is key.
The POROLUX™ and POROLIQ™ series are the reference for hollow fiber measurements. Our customers appreciate the technology and ease of use of the instruments, but above all that we can recommend the best technique to measure their hollow fibers.
Additionally, our specially designed sample holder allows for easy adaptation and testing of fibers of various internal and external diameters.
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Paper
Filter paper is a semi-permeable paper barrier permeable to one or more components of a suspension and impermeable to others. The raw materials for filter paper production are different paper pulps, which can be made of softwood, hardwood, fibre crops and mineral fibres. Paper or wet-laid fibrous media is used for different filtration applications, mainly in laboratories or industrial applications.
The POROLUX™ Cito series is the ideal porometer to measure your paper filters. It guarantees not only fast & reproducible results, but thanks to the PoreSmart software, also a straightforward and easy way of presenting the results.
Our dedicated products for this application:
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