a fluid exchange apparatus for the transfer of fluids from a first containment area to a second containment area , including a total fluid reconciliation process , whereby the same amount of fluid transferred from the first containment area to the second containment area is replenished into the first containment area , or is replenished to a preset amount . the fluid exchanger includes an evacuation section having a vacuum pump therein , and a fill section . the fluid being vacated from the first containment area is transferred to the second containment area by vacuum pressure introduced into the first containment area . an air purge is used to drive fluid out of the fluid passages / filters into the first containment area . the pressure may be developed internally to the fluid exchange apparatus or externally thereto . cpu controlled electronics are utilized to measure , monitor , and control , via a user interface screen , the fluid exchange machine .