These syringe filters are available with many different membranes, in both sterile and non-sterile varieties, and with or without pre-filters. Properties. Polypropylene or Acrylic housing; Multifunctional connectors - equipped with luer-lock or luer-slip female connections; Nylon,PTFE, PVDF,MCE,PP available ; 0.2 micron , 0.45 micron