Chromatography column fluid distribution system

A fluid distribution system comprising:

• a sample introduction module comprising:
• an inlet tube adapter at a proximal side of the sample introduction module, wherein the inlet tube adapter is configured for fluidic connection with an inlet tube;
• and
• a central fluid passageway extending from the inlet tube adapter to a distal side of the sample introduction module;
• and
• a flow distribution module positioned on the distal side of the sample introduction module, the flow distribution module comprising:
• a plurality of flow distribution arms extending radially outward from an axial center of the flow distribution module, wherein each flow distribution arm comprises a groove that extends along the flow distribution arm and faces toward a distal end surface of the sample introduction module;
• and
• a plurality of central openings that extend through the flow distribution module in an axial direction of the flow distribution module, wherein each central opening of the plurality of central openings is defined at least in part by edges of adjacent flow distribution arms of the plurality of flow distribution arms.