Careful design of the fiber shape and fiber bundle, combined with improved geometry of the housing - a short tapered housing and extended baffle - enable rapid and uniform penetration of dialysate throughout the entire fiber bundle, improving the diffusive clearances of the REXEED dialyzers.

Dye was injected into the dialysate inlet port, with dialysate flow at 500mL/min, then 10mL fractions were collected at the outlet port and measured for dye concentration by absorbance.

*In-house data
Q_d=500mL/min

A sharp, symmetrical peak indicates rapid and ideal penetration of dye into the center of the fiber bundle to give uniform flow distribution, proving the benefits of fiber bundle and housing design optimization. This characteristic leads to the high clearance of small molecules.