Dec 01, 2017 · I got the best deal on my recent order of Wheel Filters/Syringe Filters: Micron Filters: Membrane material: PVDF, Pore size: 0.22um, Diameter: 25mm. for $1.96= each, quantity: 50 at a huge discount. The average price for PVDF material Filters are 3-5 dollars each when ordering anything less than boxes of a hundred, and you are lucky if you can