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4. Open the in-line filter unit by placing two 5/16-inch open-end wrenches
onto the flats as shown.
5. Remove the in-line filter unit inlet nut, which contains the used frit.
Tips:
• Discard the frit; it cannot be reused.
• Over time, the frit can expand inside the in-line filter inlet nut. If
you cannot remove the frit from the inlet nut, discard the inlet nut,
and replace both the inlet nut and frit.
6. Insert a new frit, and then reassemble the in-line filter unit using the
wrenches.
7. Reattach the active preheater or column stabilizer tubing assembly to
the in-line filter unit.
8. Start the mobile phase, examine the assembled components for leaks,
and tighten fittings as needed.
9. Return the assembled components to the column compartment.
Flow
Place wrenches on flats and rotate to
assemble and disassemble.
Outlet assembly
Frit
Inlet nut
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