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The Importance of Filterability Studies

Filter Performance

Filter Integrity Testing Experience

Hall Pyke are one of Irelands leading filtration, separation and purification companies. Since 1977 we have been supplying bespoke, unique customer solutions for a broad range of applications across general manufacturing, food and beverage and pharmaceutical and chemical industry. #filtration #hallypek #integritytesting #filters

Reverse Bubble Point Test

Leakage from loose or damaged filter elements as well as corrosion damage to the housing is usually very difficult to detect in dust collection systems and requires a great deal of time and manpower. It is virtually impossible to detect defective welds with visual checks alone. For decades our product range has included fluorescent contrast powder especially for this purpose. Our fluorescent co...

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Determining if a sterilizing grade filter is integral can be done via non-destructive integrity testing. The water intrusion test measures the decay rate of a pressure level imposed upon a hydrophobic filter enveloped by water. Using an automated integrity tester, a particular decay level is identified as the point at which water enters the largest pores of the filter. For more information, vis...

Determining if a sterilizing grade filter is integral can be done via non-destructive integrity testing. In the diffusive flow test the membrane is wet with water, and the upstream gas is then held constant at a specified pressure near, but somewhat below, the bubble point of an integral filter. A measurement is made of the flow rate of gas through the filter and compared to the manufacturer’s ...

Determining if a sterilizing grade filter is integral can be done via non-destructive integrity testing. The basis for the integrity testing of filters depends upon the interpretation of airflows through membranes wetted by water or other fluids. The bubble point measurement identifies the largest (diameter) pores present in a membrane by the differential pressure required to empty them of thei...