1260 Infinity Binary Pump User Manual 81
Optimizing Performance
5
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.
In order to avoid accumulation of buffer salts or impurities, regularly replace the washing
solution using fresh solvents.
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