New Method for Measure Pore Size Distributions from Whitehouse Scientific

Dr Graham Rideal, managing director of Whitehouse Scientific, will deliver a paper at Filtech 2009 describing 'A new method of measuring pore size distributions using multi-modal particle size standards'. The work is being presented as part of the session on Filter Media Characterization and describes a novel technique developed by Graham Rideal and Jamie Storey of Whitehouse Scientific in collaboration with Dr B Schied of BS-Partikel in Germany. Filtech is an international conference and exhibition covering filtration and separation technologies and this year takes place from 13-15 October 2009 in Wiesbaden, Germany.

Whitehouse Scientific has developed a unique range of calibration microspheres for measuring pore sizes from over 1000 microns down to 0.1 microns. Different systems of challenge testing are used depending on the filter cut points. Above 20 microns, a high speed dry Sonic Filter Tester is used, while a wet ultrasonic system takes the measurement down to 2 microns using a combination of microscopy and narrow size distribution silica microspheres. In the sub-micron range a 'Multimodal' standard comprising of 10 non-overlapping latex microspheres in conjunction with a Disc Centrifuge can measure both filter cut points and pore size distributions.

Whitehouse Scientific will be in Hall 1, Stand D11. Graham Rideal and Jamie Storey will be available throughout to advise on any individual filter calibration requirements.

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