Agilent Technologies G4782A, Руководство пользователя

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1260 SFC Binary Pump 59
Optimizing Performance
4
When to Use the Active Seal Wash Option
When to Use the Active Seal Wash Option
Concentrated buffer solutions will reduce the lifetime of the seals and pistons
in your binary pump. The active seal wash option allows to maintain the seal
lifetime by flushing the low pressure side of the seals with a wash solvent.
The seal wash option is strongly recommended if buffer concentrations of
0.1 M or higher are used regularly with the pump.
The active seal wash option kit can be ordered by quoting Active Seal Wash
Upgrade Product including Service (G1399A).
The seal wash option comprises a peristaltic pump, secondary seals, gaskets,
seal holders and tubing for both pump heads. A bottle of premixed
water/isopropanol (90/10 vol%) is placed in the solvent cabinet and connected
to the peristaltic pump as described in the technical note that comes with the
active seal wash kit.
Always use a mixture of HPLC-grade water (90 %) and isopropanol (10 %) as
wash solvent. This mixture prevents bacteria growth in the wash bottle and
reduces the surface tension of the water.
The operation of the peristaltic pump can be controlled from the data system
or the Instant Pilot.
For adding a seal-wash option, please contact your local Agilent Technologies
service representative.
N O T E
In order to avoid accumulation of buffer salts or impurities, regularly replace the washing
solution using fresh solvents.