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.