Lab Mce 25mm 0.45 Micron Membrane Filter Unit in Biotechnology. FOB Price: US $ 23-32 / Bag. Min. Order: 1 Bag. Outer Diameter: 25mm. Pore Size: 0.45um. Media Material: PTFE. Product Name: Syringe Filter. Material: Nylon, PTFE, PTFE L, Pes, PVDF, Mce, Ca,