Table 3.

Urea clearance achieved from different dialyzers at different flow rates[29,47,51]

Manufacturer	Brand of Dialyzer	Membrane Material	Membrane Surface Area (m2)	K (urea) in ml/min when QB is 200 ml/min, and QD is 500 ml/min	K (urea) in ml/min when QB is 400 ml/min, and QD is 500 ml/min
Baxter	Revaclear 300	PAES/PVP	1.4	196	323
Baxter	Revaclear 400	PAES/PVP	1.8	198	338
Fresenius	Hemoflow F6	Fresenius Polysulfone® polymer	1.3	171	252
Fresenius	Hemoflow F8	Fresenius Polysulfone® polymer	1.8	177	280
Fresenius	Optiflux F180A; F180B	Fresenius Polysulfone® polymer	1.8	194	314
Fresenius	Optiflux F200A, F200B	Fresenius Polysulfone® polymer	2.0	194	320

Q_B is blood flow rate, Q_D is dialysate flow rate, K is clearance, PAES is Polyarylethersulfone, PVP is Polyvinylpyrrolidone