Optimizing The Pump; Operational Hints For The Vacuum Degasser; Operational Hints For The Multi Channel Gradient Valve (Mcgv) - Agilent Technologies 1260 Infinity Quaternary LC VL System Manual And Quick Reference

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Optimization of the Agilent 1260 Infinity Quaternary LC VL

Optimizing the Pump

Optimizing the Pump

Operational Hints for the Vacuum Degasser

Operational Hints for the Vacuum Degasser
If you are using the vacuum degasser for the first time, if the vacuum degasser
was switched off for any length of time (for example, overnight), or if the
vacuum degasser lines are empty, you should prime the vacuum degasser
before running an analysis.
The vacuum degasser can be primed either by drawing solvent through the
degasser with a syringe or by pumping with the quaternary pump.
Priming the degasser with a syringe is recommended, when:
• vacuum degasser is used for the first time, or vacuum tubes are empty, or
• changing to solvents that are immiscible with the solvent currently in the
Priming the vacuum degasser by using the quaternary pump at high flow rate
is recommended, when:
• quaternary pump was turned off for a length of time (for example, during
• solvents have been changed.
For more information see the Service Manual for the Agilent 1200 Series
vacuum degasser.

Operational Hints for the Multi Channel Gradient Valve (MCGV)

In a mixture of salt solutions and organic solvent the salt solution might be
well dissolved in the organic solvent without showing precipitations. However
in the mixing point of the gradient valve, at the boundary between the two
solvents, micro precipitation is possible. Gravity forces the salt particles to fall
down. Normally the A channel of the valve is used for the aqueous/salt
solution and the B channel of the pump is used for the organic solvent. If used
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vacuum tubes.
night) and volatile solvent mixtures are used, or
Agilent 1260 Infinity Quaternary LC VL Manual and Quick Reference