Precise Instrument measures air filter pore size.
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Press Release Summary:
Designed to measure retention properties of filter elements in compressed air lines, Gilson Performer III challenges air filter with dilute suspension of glass microspheres drawn through vibrating filter under vacuum. Particle size of microspheres passing, as measured by microscopy and image analysis, provides unambiguous measure of cut point of filter. Able to measure max pore sizes from more than 1 mm down to 3 microns, device provides NIST-traceable results.
Original Press Release:
New Pore Size Measurement for Air Filters
Whitehouse Scientific, a leader in the field of particle size standards, sieve calibration and filter testing, has developed a new device for measuring the retention properties of filter elements in compressed air lines. The principle of the technique is to challenge the air filter with a dilute suspension of glass microspheres, drawn through a vibrating filter under vacuum. The particle size of the microspheres passing, as measured by microscopy and image analysis, provides an unambiguous measure of the cut point of the filter. This is especially important in critical applications such as pharmaceutical processing or air and oil filters in military vehicles.
Hitherto, the performance of such filter elements could be measured only in sheet form. When fabricated into three-dimensional forms the retention properties could be seriously compromised. This is exemplified by tests performed in Whitehouse's laboratories, where a five micron filter tested as a conical cylinder allowed the passage of microspheres of up to 130 microns in diameter.
Unique to the Whitehouse method is the use of narrow particle size distribution standards which give extremely accurate results that are traceable to NIST. Maximum pore sizes from more than 1 mm down to 3 microns can be measured. www.whitehousescientific.com
About Whitehouse Scientific
Whitehouse Scientific has been producing precision glass microspheres for calibration for 20 years and is the highest ranking European certification laboratory for primary methods of particle size analysis. Having filled over one million bottles using a unique 100 stage spinning riffler system, the company is now the world's leading manufacturer of single-shot glass microsphere standards.
For further information:
Trish Appleton
Kapler Communications Ltd
Suite 2, Cressner House
12 Huntingdon Street
St Neots, Cambridgeshire
PE19 1BD, UK
Tel: +44 (0) 1480 471117
Fax: +44 (0) 1480 471118
Email: trish@kapleronline.com
www.whitehousescientific.com
Please send enquiries to:
Graham Rideal
Whitehouse Scientific
Whitchurch Road
Waverton
Chester
CH3 7PB, UK
Tel: +44 (0) 1244 33 26 26
Fax: +44 (0) 1244 33 50 98
Email: rideal@whitehousescientific.com
