Whitehouse Scientific's novel approach to filter calibration uses glass microspheres in single shot bottles to provide a measure of pore size or filter cut point that is traceable to NIST and NPL standards (www.WhitehouseScientific.com).The method also allows verification of maximum pore size and can be used on most filter media,including all forms of complex woven and non-woven materials that are impossible to calibrate by other means.
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