The present disclosure relates to an apparatus for refilling a replaceable ink container. The ink container has a top and bottom portion relative to a gravitational frame of reference. The replaceable ink container further has a capillary storage member disposed therein and a fluid outlet disposed on the bottom portion. The apparatus for refilling includes a fluid interconnect configured for insertion into the bottom portion to compress the capillary storage member. Included is a back pressure measuring device for determining an amount of ink to fill the replaceable ink container. Also included is an ink delivery device for providing the determined quantity of ink to the replaceable ink container through the fluid interconnect. The ink delivery device is configured to deliver ink to the ink container positioned in a bottom down orientation relative to the gravitational frame of reference to provide ink to the capillary storage member proximate the fluid outlet.