7. Dialysate Preparation
Using the dialysate flow rate and the concentrate information, the
Instrument calculates the amount of concentrate(s) required per
stroke of the flow equalizer. The rest of the flow equalizer volume
is filled with water. Figure 7-3 illustrates the Drake Willock
dialysate option.
Figure 7-3. Basic (36.83X) Volumetric Proportioning
Imagine a bucket that holds exactly 36.83 mL. For a Drake
formulation, the “A” concentrate pump delivers 1 mL of acid
concentrate. The “B” concentrate pump delivers 1.83 mL of
bicarbonate concentrate. Filling the rest of the bucket with 34 mL
of water completes the proportioning of the dialysate.
Volumetric Flow Equalizer
Figure 7-4. Arena Volumetric Proportioning
157-1278-914 Rev A 7-7
January 2004
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