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FX high-flux and FX low-flux dialyzers

FX-class dialyzers

Innovation at all levels

  • State-of-the art FX-class design
  • Efficient removal of uraemic toxins with the Helixone® membrane
  • INLINE steam sterilized
  • Available in both low-flux and high-flux ranges

Key features


 Helixone® — the advanced polysulfone membrane 

INLINE steam sterilization – purity ensured

INLINE steam sterilisation process
INLINE steam sterilisation process

INLINE steam sterilization – how it works

  1. Both the blood and the dialysate compartment of the dialyzers are rinsed continuously with steam at a temperature of 121°C for a minimum of 15 minutes, or a higher temperature for a shorter time, to ensure sterility. 
  2. The dialyzer is rinsed with sterile water
  3. Every dialyzer is tested for fiber integrity using a bubble-point test
  4. The dialyzers are dried with warm, sterile air
  5. Finally, after drying the blood inlet and outlet ports are closed

INLINE steam sterilization – the benefits

Fibre integrity testing

  • All dialyzers have to pass the bubble point test as part of the INLINE steam sterilization process
  • Sterile air is pressed into the dialyzate compartment while the blood compartment contains sterile water
  • If any leakages were present in the membrane, air would pass through the membrane and create bubbles
  • Dialyzers failing the integrity test are discarded
  • This integrity test minimizes the risk of fibre ruptures and the risk of blood leakages
Integrity test of fibers

Performance data

FX low-flux dialyzers

FX high-flux dialyzers

FX hemodiafilters

Related content

1 Bowry, S.K.: Nano-controlled membrane spinning technology: Regulation of pore size, distribution and morphology of a new polysulfone dialysis membrane. In Hemodialysis Technology (eds: Ronco, C., La Greca, G.) Contributions to Nephrology, Vol. 137: 85-94 (2002)
2 Ronco, C., Nissenson, A.R.: Does nanotechnology apply to dialysis? Blood Purification 19: 347-352 (2001)