What is the difference between a direct integrity test and a continuous monitoring test?
A direct integrity test is typically a pressure-based test that determines if the membrane unit (rack) is intact, or free of any leaks. Direct integrity tests require that the membrane unit be taken off line to conduct the test. A continuous monitoring test monitors the integrity of a membrane unit through the monitoring of water quality. The direct integrity test is typically more sensitive, but it is an intermittent test, and the continuous monitoring test, though less sensitive, monitors the quality of the membrane system continuously. Typically, direct tests are complemented or supported by continuous monitoring tests. This FAQ supplied by: Hach Company.
