86 1220 Infinity II LC System User Manual
5
Solvent Delivery System Description
Overview
Overview
The pump is based on a two-channel, dual-plunger in-series design that
provides all essential functions that a solvent delivery system has to fulfill.
Metering of solvent and delivery to the high-pressure side are performed by
one pump assembly that can generate a pressure up to 600 bar.
The solvents are degassed by a vacuum degasser, and solvent compositions are
generated on the low-pressure side by a high-speed proportioning valve. The
dual-channel gradient pump includes a built-in dual-channel online vacuum
degasser. The isocratic pump of the Agilent 1220 Infinity II LC has no
degasser.
The pump assembly includes a pump head with an inlet valve and an outlet
valve. A damping unit is connected between the two plunger chambers. A
purge valve, including a PTFE frit, is fitted at the pump outlet for convenient
priming of the pump head.
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