HiFlo self priming 0.2 micron filters have tube ports with 0.12 in. OD. They are also available with 0.15 inch ID socket ports. These filters allow for a flow rate of 25 ml per minute at 36 in. H20 head height. Each HiFlo filter has a polyethersulfone (PES) hydrophobic membrane and a polytetrafluoroethylene (PTFE) hydrophobic vent. There is a choice of tube or socket ports to eliminate the need for adapters or fittings.