Why is it important to evaluate filter efficiency at different airflow rates?

Evaluating filter efficiency at different airflow rates is crucial to ensure that the filter performs effectively under various operational conditions. Airflow rates can vary significantly in real-world applications, depending on factors like changes in HVAC settings, occupancy, and system design. A filter may perform well at one airflow rate but might not achieve the same efficiency at another, which can lead to inadequate air quality and increased particle buildup within the system.

By assessing filter efficiency across a range of airflow rates, you gain insights into the filter's ability to trap airborne contaminants and provide consistent air quality, regardless of the conditions. This thorough evaluation helps to select the right filter for specific applications, ensuring optimal performance and longevity, and maintaining a safe and healthy environment for occupants.