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The Difference Between Pocket Filters and Bag Filters

Bag Filter & Pocket Filter

The terms bag filter and pocket filter are often used interchangeably – but there is a difference between these two industrial air filters.

Typically, a bag filter has a metal frame (galvanized steel or aluminum) with anywhere from 3-6 pockets of micro glass or synthetic filtration media. The ‘pockets’ of a bag filter are not ‘rigid’ and sometimes have a tendency to collapse in the air stream, especially under high airflow.

Why Cleanrooms can Benefit from High Efficiency V-Bank Filters

High efficiency filter

A ‘clean room’ is a controlled environment generally used in the pharmaceutical industry for scientific research. As the term suggests, a clean room maintains a very high level of air quality, free of pollutants such as dust particles, airborne organisms and chemical vapors.

The ambient air outside in a typical city environment contains around 35,000,000 particles per cubic meter. According to ISO standards, an ISO1 clean room permits no more than 12 particles per meter cube. Many organizations high-efficiency V-Bank filters to create this controlled environment.

Understanding HEPA Filter Standards

Hepa Standards

One type of high-efficiency air filter that was commercialized in the 1950s is the HEPA filter, an acronym for High Efficiency Particulate Air.

These air filters must satisfy a certain standard of high efficiency such as those developed by the US Department of Energy (DOE). A critical role is played by these filters for facilities in such industries as medical, automobile and aircraft.

What does a HEPA Filter do?


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