A fluid filtration system for use during minimally invasive surgical procedures involving a surgical site having higher than ambient pressure, the system comprising: a filter body with a site side and an outlet side; a flow selector disposed inside the body , the flow selector having a hollow body portion with an inlet defined therein; a filter holder disposed inside the filter body , the filter holder configured and arranged to receive filter media at a first end and having an upstanding hollow member at a second end for receiving the body of the flow selector , the hollow member having at least one opening defined therein such that rotation of the flow selector relative to the filter holder causes the at least one opening to align with a portion of the inlet in the flow selector to establish a pathway for fluid flow, the flow being adjustable depending on which portion of the inlet in the flow selector aligns with the at least one opening in the filter holder ; a first fluid conduit extending between the surgical site and the site side of the filter body ; a second fluid conduit removably attachable to the outlet side of the filter body such that the conduit can be configured and arranged to extend between the outlet side and a vacuum source, the vacuum source generating a pressure of approximately -100 to -600 mm Hg (-13.3322 kPa to -79.9932 kPa); a secondary filter configured and arranged to removably attach to the outlet side of the filter body , the secondary filter having one or more openings for releasing a filtered gas to atmosphere wherein the fluid filtration system is capable of alternating from (i) an active to a passive configuration by removing the second fluid conduit and attaching the secondary filter , and (ii) a passive to an active configuration by removing the secondary filter and attaching the second fluid conduit. a filter body with a site side and an outlet side; a flow selector disposed inside the body , the flow selector having a hollow body portion with an inlet defined therein; a filter holder disposed inside the filter body , the filter holder configured and arranged to receive filter media at a first end and having an upstanding hollow member at a second end for receiving the body of the flow selector , the hollow member having at least one opening defined therein such that rotation of the flow selector relative to the filter holder causes the at least one opening to align with a portion of the inlet in the flow selector to establish a pathway for fluid flow, the flow being adjustable depending on which portion of the inlet in the flow selector aligns with the at least one opening in the filter holder ; a first fluid conduit extending between the surgical site and the site side of the filter body ; a second fluid conduit removably attachable to the outlet side of the filter body such that the conduit can be configured and arranged to extend between the outlet side and a vacuum source, the vacuum source generating a pressure of approximately -100 to -600 mm Hg (-13.3322 kPa to -79.9932 kPa); a secondary filter configured and arranged to removably attach to the outlet side of the filter body , the secondary filter having one or more openings for releasing a filtered gas to atmosphere wherein the fluid filtration system is capable of alternating from (i) an active to a passive configuration by removing the second fluid conduit and attaching the secondary filter , and (ii) a passive to an active configuration by removing the secondary filter and attaching the second fluid conduit. <EOS>