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nephro SAFE

Product catalog summary

Introduction
The document discusses the integration of heat disinfection and ultrafiltration in dialysis machines by DWA, highlighting the production of ultrapure permeate and its consistent supply to dialysis machines. The nephro SAFE system ensures bacterial-free permeate through continuous ultrafiltration and programmed heat disinfection, adhering to ISO standards.

Continuous Ultrafiltration
This process eliminates microorganisms, biofilm fragments, and endotoxins from the permeate during dialysis. Ultrafiltration membranes have a higher separation capacity for endotoxins compared to reverse osmosis membranes, enabling the production of ultrapure permeate.

Heat Disinfection
The nephro SAFE system performs automatic heat disinfection of the permeate distribution ring and dialysis machine components, enhancing microbiology and biofilm prevention. This process occurs during dialysis-free times, optimizing power and water usage.

Scientific Study
A study by Dr. Frank-Peter Tillman demonstrated the effectiveness of heat disinfection in biofilm prevention, showing complete bacterial load reduction in contaminated tubes after two weekly heat cycles.

Special Technical Features

Proven ultrafiltration system with durable crossflow operation.
Water savings through concentrate return flow.
Three-stage pressure regulation for automatic tank filling.

Functional Materials and Operation

High-quality stainless steel ensures reliability and longevity.
Efficient thermal insulation reduces power consumption.
Frequency-controlled pressure pump optimizes distribution ring conditions.

Energy Monitoring

Technical parameter setup optimizes heat disinfection costs.
Adjustable conservation temperature reduces energy use between cycles.
Filling level adjustable to heat only required permeate volume.
Customized heating periods prevent electrical peak-loads.

Contact Information
DWA GmbH & Co. KG, Großer Sand 8, 76698 Ubstadt-Weiher, Phone: +49 7251 6900-0, Fax: +49 7251 6900-115, Email: [email protected], Website: www.dwa-online.com

Catalog excerpts

[ nephro SAFE ] Heat disinfection and ultrafiltration into the dialysis machines

Open the catalog to page 1

Ultrapure permeate thanks to closed hygienic chain [ nephro SAFE ] Production of ultrapure permeate and its supply through into the dialysis machine with the same consistent high quality is another innovation which demonstrates DWA´s expertise in development of permeate systems for dialysis. The nephro SAFE ensures bacterial free permeate through combination of continuous ultrafiltration during dialysis operation, followed by automatically programmed heat disinfection with optimum consumption of both water and power. The efficacy of thermal disinfection is defined by A(0)-Value according to ISO...

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Scientific study concerning the inspection of the effect of heat disinfection on biofilm prevention by Dr. Frank-Peter Tillman, Dialysis centre Emsdetten, Germany in September 2013: “…The prospective scientific analysis by a novel hygienic monitor arises a complete reduction of bacterial load of a highly contaminated silicone tube with full removal of biofilm after two heat water cycles per week. As a result of this study a higher frequent disinfection for preservation of a sterile ring-main system seems not mandatory.” Special technical features • Proven DWA system for ultrafiltration of permeate...

Open the catalog to page 3

DWA GmbH & Co. KG Großer Sand 8 76698 Ubstadt-Weiher Phone: +49 7251 6900-0 Fax: +49 7251 6900-115 [email protected] www.dwa-online.com The Dialysis Water Speci

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All DWA GmbH & Co. KG catalogs and technical brochures

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