Definition - What does Absolute Filter mean?
An absolute Filter is the most common rating of filters which gives the size of largest particles that can pass through the screen or filter. The pore size of the filter states the pore size at which any particle with a particular size can be retained with one hundred percent efficiency under specific test conditions defined strictly. The conditions that should be specified are challenge pressure, detection method, test organism and concentration methods used for identifying the contaminants.
Petropedia explains Absolute Filter
Absolute Filter has an absolute pore size which means that no pore smaller or larger than the absolutely rated size can pass through the filter. These filters are efficient in retaining one hundred percent of particulates like bacteria that are larger than the rated size. The term "absolute rating" is used to define or describe the filtration degree of an Absolute Filter. There are numerous methods which can be used to determine the absolute rating of an Absolute Filter and are not interchangeable. Absolute rating means one hundred percent removal of the particles above a specific micron size by using the Absolute Filter.
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