Cheap And Discounts 10pcs/lot Lab 13mm 25mm Pore Size 0.22um/0.45um Disposable Sterile Syringe Filter with CA / Nylon / PES / PVDF Membrane Wholesale. Buy Directly From Merchant NK Labware Factory Store. Enjoy ✓Free Shipping Worldwide! ✓90 Days Buyer Protection. ✓Easy Return. ✓Money Back Guarantee.