Leukocyte Reduction Membrane, PBT, 3 mm (CAT#: STEM-BC-0122-ZJF)

The leukocyte reduction membrane is made from PBT fiber and PBT nanofiber layers. It uses nanofiber technology to increase pore volume and particle capture capacity per unit area. The membrane is thinner than conventional leukocyte filter media, helping reduce blood retention in the filter. A staged filtration structure combines prefiltration and final filtration layers. Surface modification improves blood compatibility and supports red blood cell passage through the membrane. The high porosity and soft nanofiber structure help reduce mechanical damage to red blood cells. Functional group surface modification supports stable leukocyte adsorption during filtration. The membrane is produced in a sanitary environment and can be used as a final raw material without additional cleaning or post-treatment.

Material: PBT fiber plus PBT nanofiber
Thickness: About 3 mm with 8 layers
Nanofiber diameter: About one-third of ordinary fiber diameter
Pore capacity per unit area: 40% higher than ordinary fiber
Whole blood prefiltration volume: 442 mL
Red cell suspension prefiltration volume: 310.4 mL
Blood temperature during filtration: 10°C
Wetting time: 10 s
Filtration time: 7 min for whole blood and 6.5 min for red cell suspension
Residual leukocyte count: 1.6 x 10^6 for whole blood and 1.4 x 10^6 for red cell suspension
RBC recovery: 91.0% and 92.8%
WBC removal rate: 99.9%
Hemolysis rate: 0.033% and 0.040%

Nanofiber structure increases filtration capacity
Thin membrane reduces blood retention
Staged prefilter and final filter structure
Surface modification improves blood compatibility
Low hemolysis tendency
High leukocyte removal efficiency
Smooth red blood cell passage
Ready for use as final raw material

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