Wheel filter Syringe Filter with 0.22 0.45 micron PVDF Membrane for lab. Sterile or nonsterile Sheathing material: PP Pore size: 0.22μm, 0.45μm Diameter: 13mm, 25mm, 33mm Package: Individually Wrapped or 100pieces/bag or 200pieces/jar Color: Yellow, Blue, Green, Pink, White, Purple. There are two connecting forms: luer lock or luer slip.