Water for Dialysis
The quality of the water used in the preparation of dialysis fluid is very important. Even water considered as acceptable according to existing tap water regulations may have chronic as well as acute effects on the dialysis patient. The Gambro single patient reverse osmosis monitor WRO 300 H is specially designed to provide the high-quality water needed for dialysis.
Reverse osmosis is today the preferred method for the purification of water for dialysis. This method removes more than 96% of dissolved salts and more than 99% of all particles, bacteria and pyrogens in the water. Most tap waters can therefore be purified to a standard, which complies with existing recommendations for water for dialysis. WRO 300 H is a reverse osmosis unit designed specifically for dialysis. It combines simplicity, reliability and ease of use and is based on the longtime experience of water treatment equipment within Gambro.
Integrated heat or chemical disinfection
When WRO 300 H is fitted to a Gambro dialysis machine, one of the disinfection programs will allow an integrated heat, alternatively chemical disinfection of the reverse osmosis unit, the connection line to the dialysis machine and the dialysis machine itself. This “end-to-end” action will ensure that the hygienic chain remains unbroken.
|Output||Minimum 1.2l/min at +10oC and 0.2 MPa [Pa] outlet pressure|
Depends on inlet water quality. If potable water is used and WRO 300H is maintained according to the manual. the following minimum rejection rates will be obtained:
Total dissolved salts: >96%
Bacteria and pyrogens: >90%
|Feed water supply|
|Pressure:||0.1-0.8 MPa (1-8 bar)|
|Temperature:||5 to 30oC|
|Quality:||Potable water shall be used. Softener followed by carbon/particle filter ensures optimum performance.|
|To insure maximum membrane life expectancy, the following limits should not be exceeded:|
|Hardness:||<0.3 odH (6ppm ass CaCO3)|
|Total dissolved salts: (TDS)||<1500mg/l|
|Fouling index (S.D.I)||<5|
|Peak flow [rinse]||3.0l/min|
|Supply and drain lines||Designed for flexible, reinforced tubing. 8mm x 3mm|
|Product water loop||Designed for flexible, reinforced tubing. 8mm x 3mm|
|User interface displays:|
|Product water conductivity||Temperature compensated product water conductivity, operating range 10–500 µS/cm|
|Feed water conductivity||Temperature compensated feed water conductivity, operating range 10–2000 µS/cm|
|Rejection rate||Rejection rate, operating range 10-2000 µS/cm|
|Reverse osmosis membrane|
|Material||Polyamide, thin film composite|
|Disinfection & Cleaning|
|Heat disinfection||User initiated or automatic start of heat disinfection|
Automatic dilution of disinfectant.
Rinse memory forcing the rinse program to start after chemical disinfection.
|Cleaning||Customized programs for different needs.|
|Mains voltage:||100, 115 or 220-240 V+/- 10%, 50 or 60Hz|
max 1850 W
max 1500 W
max 1380 W