Millipore 8003 - Cell Operation

19Stirred Ultraltration Cells
Chemical Resistance, continued
For other solvent compatibilities, consult a standard
text or contact Millipore Technical Service. For the
chemical resistance of disc membranes, see the
instructions packed with the product.
Cell Operation
Select the cell operating mode as follows:1.
For concentration: Connect the inlet line to a
regulated gas pressure source.
NOTE: Use nitrogen gas for pressurizing the cell.
Using compressed air can cause large pH
shifts, due to dissolution of carbon dioxide.
With sensitive solutions, oxidation may also
occur, potentially leading to other problems.
For dialtration: Connect the cell to an auxiliary
reservoir, using the Concentration/Dialysis
Selector Valve, model CDS10 (Millipore
cat. no. 6003). Refer to User Guide 99104
for detailed instructions.
Hold the cell steady on the laboratory bench and 2.
pressurize. Follow the instructions in the membrane
package to determine optimal operating pressure.
Do NOT exceed the cell pressure limit of 75 psi
(5.3 kg/cm
2
). Once the system is pressurized, the
cap assembly moves upward, forming a secure lock
with the retaining stand.
99228_RevM.indd 19 8/7/2008 3:10:18 PM