Max Operating Temperature (° F) 140. Max Operating Temperature (° C) 60. Description Syringe Filters, 0.22 um Nylon, 3 mm; 200/Pk. Key Features. Non-pigmented acrylic or polypropylene (PP) housings feature integral filter sealing to avoid the risk of contamination from pigments and adhesives. Each filter is clearly marked with membrane pore size.