Oct 29, 2021 · Whatman Puradisc 13 mm PES Syringe Filters, 0.2 µm, 50 Pack. PES Syringe Filters, 0.22 um, 13mm, Luer-Lok/Luer Slip, Sterile, 100 per pack, SF14504. Regular Price: $88.21. Price $76.70. Description. Description. Whatman 13 mm Puradisc Filters are produced from pigment-free polypropylene with standard inlet (female luer lock) and outlet (male