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the surface tension of the IV fluid dominates and alters the fluid behavior compared to 1 G. Consequently, in microgravity, the infusion flow fills the drip chamber in the IV set such that there is not a stream of drops to count or other visible cues to assess the flow rate. Hence, there is a need to measure the inline flow rate with a flow sensor to determine what flow rates can be generated with a pressurized sleeve around the bag of infusion fluid to drive the IV infusion, as was used in this investigation. METHODS Apparatus Design and Reduced Gravity