56 Agilent 1200 Preparative Pump User Manual
4 Using the Preparative Pump
Algae Growth in HPLC Systems
• Algae growth may also be the possible source for failures of the ball valves
and other components in the flow path.
How to Prevent and/or Reduce the Algae Problem
• Always use freshly prepared solvents, especially use demineralized water
which was filtered through about 0.2 µm filters.
• Never leave mobile phase in the instrument for several days without flow.
• Always discard “old” mobile phase.
• Use the amber solvent bottle (part number 9301-1450) supplied with the
instrument for your aqueous mobile phase.
• If possible add a few mg/l sodium azide or a few percent organic solvent to
the aqueous mobile phase.
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