PP Membrane, 0.65 μm, 270 mm (width) 
Polypropylene (PP) Membrane, a type of microporous filtration medium crafted from polypropylene thermoplastic polymer, has emerged as a staple in filtration technologies across industries and scientific research. Its development stems from the demand for materials that combine chemical inertness, structural stability, and cost-effectiveness—attributes that traditional filtration media often lacked.
Core Nature: PP Membranes are inherently hydrophobic, a key characteristic that makes them distinct from hydrophilic alternatives like polyethersulfone (PES) or polyvinylidene fluoride (PVDF) membranes. This hydrophobicity is engineered at the polymer level, enabling selective filtration of non-aqueous fluids without pre-wetting requirements.
Pore Size Significance: The 0.65 μm pore size is a critical specification in microfiltration, striking a balance between particle retention and flow efficiency. It is specifically calibrated to capture larger microorganisms, colloids, and particulate matter while allowing smaller molecules and solvents to pass through—filling a vital niche between coarse (1.0 μm+) and fine (0.45 μm-) filtration.
Dimensional Practicality: With a width of 270 mm, this membrane format is designed for scalability in both laboratory and industrial settings. It fits standard filtration equipment such as membrane holders, roll filters, and cassette systems, eliminating the need for custom adapters and streamlining integration into existing workflows.
Material Sustainability Edge: Unlike halogen-containing membranes (e.g., PTFE), polypropylene is a pure hydrocarbon, reducing disposal complexities and aligning with eco-conscious operational goals. This makes it a preferred choice for industries prioritizing sustainable filtration practices.
