36 www.millipore.com
3. Turn pump on—increase pump speed until feed pressure
gauge reads 1.38 Bar (20 psi).
Note: Check system connections for leaks—tighten connec-
tions if required
4. Adjust retentate valve restriction by slowly turning retentate
valve clockwise
until the retentate pressure gauge reads
0.69 Bar (10 psi).
5. Adjust pump speed and retentate valve restriction to achieve
desired feed retentate pressures (recommend 2.07 Bar (30 psi)
feed / 0.69 Bar (10 psi) retentate).
RETENTATE TUBING
Figure 34: Concentration Setup.
Note: Do not exceed 4.14 Bar (60 psi) feed pressure.
6. Continue processing until the desired concentration or volume
is reached. Turn pump off.
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