Abstract: A drip metering apparatus, as for parenteral liquid infusion, includes a coupling arrangement providing multiple passageways from a liquid supply connector to a drip chamber. The passageways lead from the supply connector to respective drop-forming outlets, with the outlets of the different passageways being dimensioned to form different drop sizes and disposed to introduce the respective drops into an upper region of the drip chamber. In a preferred embodiment, the passageways are coaxial with one another and with the drip chamber, with the outer passageway being bounded in part by a resiliently flexible, relatively large diameter outer tube and the inner passageway being bounded by a relatively rigid, relatively small diameter inner tube.