The composite depth media combines cellulose fibers with inorganic filter aids and synthetic resin to create a three-dimensional filtration structure. This helps improve particle retention, dirt-holding capacity, and structural stability compared with a simple cellulose layer, making the filter suitable for process fluids with relatively high or complex contaminant loads.

The correct grade depends on feed turbidity, particle size distribution, solids loading, required filtrate clarity, flow rate, and downstream filtration requirements. Available ratings include 0.5–0.8 μm, 3.0–6.0 μm, and 6.0–15 μm. Finer grades provide tighter clarification, while coarser grades are more suitable for upstream prefiltration and heavier contaminant loads.

Yes. The SFH/-DS can be used as a clarification or prefiltration stage to reduce particles and contaminant loading before a finer membrane filter. This can help protect the downstream membrane and improve overall filtration stability. The SFH/-DS itself should not be considered a final sterilizing membrane unless the complete process has been specifically validated for that purpose.

The listed maximum operating temperature is below 40°C, and the maximum differential pressure is 4.0 bar at 23°C. Actual operating conditions should also consider fluid viscosity, solids concentration, selected filter grade, flow rate, and batch conditions to maintain stable filtration performance.

Replacement should be based on process performance rather than a fixed service interval. Typical indicators include increasing differential pressure, decreasing flow rate, longer filtration time, or deterioration in filtrate clarity. Actual service life depends on contaminant loading, fluid properties, selected filtration grade, batch volume, and required final product quality.