Filter Integrity Testing

Overview
Filter integrity testing is a technique that evaluates the effectiveness of a filter to perform its task. This test measures the bubble point (BP) – the pressure required to break the surface tension of the liquid inside the filter and allow the air to pass through to the other side). The BP is specified by the filter manufacturer, and depends on a number of factors including pore size and liquid type.
Learning Objectives
Upon completion of this exercise, you will be able to:
- Describe the the basic components of a filter
- Discuss the purpose of a manual bubble point test
- Complete a filter integrity test procedure
- Review the results of a filter integrity test
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