Which detail is not recorded for each filter run?

The detail that is not recorded for each filter run is the expected length of filter life. When managing and monitoring filter operations, key parameters such as flow rate, water temperature, and filter media type are routinely documented, as they directly impact the filtration process and performance.

Flow rate is critical because it influences the efficiency of the filter and can affect water quality. Water temperature is important because it can alter the viscosity of water and the behavior of contaminants, ultimately impacting filtration effectiveness. The type of filter media is essential to understand the specific characteristics and capabilities of the filter being used, as different media types can handle different types of contaminants.

In contrast, while the expected length of filter life may be an important consideration when planning maintenance or replacements, it does not pertain to the immediate operation or performance of the filter during a specific run. Therefore, this detail is not typically recorded as part of the real-time data for each filter operation.