Why is it important to understand the limitations of nominal filters?

Understanding the limitations of nominal filters is crucial primarily because they may not consistently meet filtration claims over time. Nominal filters are designed to remove a certain percentage of particles within a specified size range under ideal conditions. However, over time, factors such as loading and varying flow rates can affect their performance. This inconsistency can lead to situations where the filter does not effectively remove contaminants as expected, which could potentially compromise health and safety standards in settings where clean water or air is critical.

Recognizing these limitations helps environmental health specialists make informed decisions regarding the appropriate type of filtration system to implement, ensuring that it aligns with the specific needs of the environment or application. It is essential for maintaining high safety standards, particularly in industries that rely heavily on effective filtration methods.