Applications For Porosimetry and Porometers

image pore size gasWithin this short page we can only hope to give you a brief summary of the key applications for each type of instrumentation. We will expand on this elsewhere on the site – and, of course, Meritics is always, ready, willing and able to advise you personally on your choice of technique.

Today’s porometers are very sophisticated, accurate and capable of delivering highly reproducible results. Each product has qualities and design features which should be studied carefully before reaching your decision.

They can perform a variety of tasks. Pore structures can be determined both in the thickness direction (z) and the in-plane direction (x and y). They can accommodate a large variety of sample shapes and sizes. Importantly, materials can be analysed without having to cut a sample from the product being tested.

Furthermore, porometers can be used to assess the effects of compressive stress, cyclic compressive stress, temperature and the chemical environment on pore structure.

Specialised optional features can be added to a porometer for applications requiring multiple sample chambers, rapid generation of reproducible data, multiple tests, analysis of liquid permeability and predefined product selection criteria.

Similarly, permeameters can be selected to meet specific needs. There are gas permeameters and liquid permeameters, for determining permeability of gases or liquids, respectively, through porous materials.

To measure gas or vapour permeability through materials at very low levels, microflow and diffusion permeameters are available.

The flow rate of vapour transmitted in response to a humidity gradient can be determined using vapour transmission analysers.

For more specialised applications, permeameters can be adapted to allow multiple sample chambers, sample testing without cutting, accommodation of unusual sample shapes and sizes, and analysis of permeability involving strong chemicals, elevated temperatures, high pressures and in-plane flow.

Mercury porosimetry should always be considered as an option, as it generates information very quickly and reliably in many circumstances. However, it is not suitable for use with all materials. Meritics will be happy to tell you about the applications for which it is the most appropriate technique.

We can support you through the decision-making process, with resources including our telephone helpline and our field-based engineers. Please feel free to call on us for advice.

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