When assessing flow rate through a filter, what does a smaller micron rating signify?

A smaller micron rating indicates that the filter is designed to capture smaller particles, enhancing the filtration efficiency. When a filter has a smaller micron rating, it means it can trap finer contaminants, resulting in less dirt passing through the filter. This is crucial in applications where high purity and cleanliness are necessary, such as in certain industrial processes, HVAC systems, or fluid systems where contaminants could cause damage or reduce efficiency.

While a smaller micron rating improves the filter’s ability to capture a wider range of particles, it can also lead to higher flow restriction and reduced flow rates over time as the filter becomes loaded with captured contaminants. However, the primary significance of the smaller micron rating is its ability to minimize the amount of dirt that can pass through the filter, thereby maintaining the integrity of the system it protects.