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Testing Fibrous High Efficiency Filters

Fibrous high efficiency filters offer the unique ability to trap both small and large-sized particles efficiently, while allowing mid-sized particles to pass through. In tests using aerosol disbursement, particles smaller than 0.1 µm and larger than 0.4 µm were...

What Is a High Efficiency Filter?

You’ve probably seen packages marked “high efficiency filter.” But what is a high efficiency filter? Do you need one? Is it any better than other filters? High efficiency filters are MERV 11-16, and are designed to remove particulates from 65% up to...