Quick Guide to Media Filter Fibers in Cartridge Filters


You can use the following blog to help you make a decision when debating what type of media fiber you need for your specific application. A few things you need to understand before continuing to read. A MERV rating means Minimum Efficiency Reporting Value which was developed by the American Society of Heating, Refrigeration and Air Conditioner Engineers – ASHRAE. MERV values vary from 1 to 16. The higher the MERV value is the value the more efficient the filter will be in trapping airborne particles. Another factor to consider is your application, this will affect the lifecycle and operating condition of the media fiber.

Cellulose and Cellulose Blend:

Cellulose media filters are widely used in industrial applications. They are primarily sourced from wood pulp and cotton which makes them very inexpensive to produce. They have a low MERV efficiency rating of 8 to 10. These are typically seen in low-cost commodity grade filters and have a short service life. Things to remember are the cost of service due to a short service life and the operating condition the media will be under in the application.

Spunbonded polyester:

Spunbonded polyester media filters are made up of 100% polyester and typically have an average MERV rating of 10 to 11. These media filters are strong and very resistant to abrasion and moisture resulting in them being used in many dust collection applications. Their lifespan is still considered shorter so this should be kept in mind but their strength makes them ideal in dust collecting.


Nanofiber is typically a layer of synthetic nanofibers that are attached to the substrate. The have a very high MERV rating from 13 to 15. They work to defend from submicron particles from getting into the substrate. This extends out the media lifecycle because the substrate is protected. They have a very good lifecycle performance vs cost balance.

ePTFE membrane:

The ePTFE is also a surface loading media. This will be found on a polyester substrate and has an extremely high MERV rating of 16. Its sturdy construction holds up to abrasion and moisture better than the nanofiber. This media has a higher cost than most and would typically only be used for specific applications that require it.

Picking the correct media filter that will provide the best lifecycle performance and value for money will help your operation improve production. Work closely with your supplier to construct the best solutions. Servicing industrial clients in the Tri-State area we know that not all suppliers are created equal for every application. Reach out if you need further assistance for a Free Air Cleaner Evaluation in the Tri State Area.

Thanks for Reading,

The Bee Clean Team