Technical data

Agilent 1290 Infinity LC System Manual and Quick Reference 29
The Agilent 1290 Infinity LC System - Product Description
2
System Components
The 1290 Infinity Quaternary Pump
In contrast, the 1290 Infinity Quaternary Pump is equipped with only one
pump head and an additional multi-channel gradient valve (MCGV) to portion
the eluents according to the programmed gradient. According to this low
pressure mixing principle, the solvents meet in the Inlet Weaver and are
therefore already mixed before and in the pump head.
The pump head is the same as that in the 1290 Infininty Binary Pump and
therefore has the same performance values and technical details. It can also be
equipped with an active seal wash to extend the lifetime of the pump seals,
when using concentrated buffer solutions.
A pressure sensor monitors the pressure during the analysis before the
solvents enter the multi-purpose valve, a 4-channel stream selector, which
allows different functionalities shown in the figures below. The multi-purpose
valve is equipped with an in-line filter, which will always be used during an
analysis, an optional 380 µL Jet Weaver mixer, which ensures the best possible
mixing of solvents and can be easily installed, an optional restriction capillary
and a connection to the waste system.