The three levels of filter efficiency commonly referred to are:1.Low Efficiency Filters: Low efficiency filters, also known as primary or coarse filters, are designed to capture larger particles and protect subsequent filters in the system. These filters typically have a lower filtration efficiency and are capable of capturing particles larger than 10 microns (μm). They are effective in removing larger dust, dirt, hair, and debris from the air or fluid stream.

2.Medium Efficiency Filters: Medium efficiency filters offer a higher level of filtration compared to low efficiency filters. These filters are designed to capture particles in the range of 1 to 10 microns (μm). They are capable of removing smaller dust particles, pollen, mold spores, and other common airborne contaminants. Medium efficiency filters are commonly used in applications where a moderate level of filtration is required, such as in HVAC systems, cleanrooms, and industrial processes.
3.High Efficiency Filters: High efficiency filters, also known as HEPA (High-Efficiency Particulate Air) filters, provide the highest level of filtration efficiency. These filters are capable of capturing particles as small as 0.3 microns (μm) with an efficiency of 99.97% or higher. HEPA filters are highly effective in removing fine particles, including bacteria, viruses, allergens, and other microscopic airborne contaminants. They are commonly used in applications that require strict air quality standards, such as