Measuring and testing – With fluid pressure – Porosity or permeability
Reexamination Certificate
2005-09-06
2005-09-06
Williams, Hezron (Department: 2856)
Measuring and testing
With fluid pressure
Porosity or permeability
C073S866000, C210S323100
Reexamination Certificate
active
06938460
ABSTRACT:
A method is made available for conducting an integrity test of filter elements (3), in particular of sterile filters. The integrity test involves direct measurement, at constant pressure, of a liquid flow on the inflow side of the filter element (3) to be tested. The test method is practically independent of changing environmental conditions, provides a result which is not distorted by a change of pressure on the inflow side of the filter element, and permits a very short measurement time.
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Seiler Roger
Stering Magnus
Van Den Boogaard Jügen
Bellamy Tamiko
Casella Anthony J.
Hespos Gerald E.
Sartorius AG
Williams Hezron
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