Overview Of The Module - Agilent Technologies InfinityLab LC Series User Manual

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Introduction

Overview of the Module

Overview of the Module

The Agilent InfinityLab LC Series Vialsamplers are designed for use with other
modules of the Agilent InfinityLab LC Series, 1200 Series, and 1100 Series LC,
or with other LC systems if adequate remote control inputs and outputs are
available. The vialsamplers can be controlled by Agilent Local Controllers or
by Agilent control software (OpenLAB CDS, Masshunter etc.).
Three sample-rack sizes are available for the vialsampler. The standard
half-size rack holds 2× 66 vials (2.0 mL) while the other half-size rack options
provide space for 2× 18 vials (6.0 mL) respectively. Any two half-size rack
drawers can be installed in the vialsampler simultaneously. A specially
designed two half-size sample-rack holding 2× 50 vials (2.0 mL) vials is
available for method compatibility. These special 2× 50 vials (2.0 mL) half-size
racks are not designed for combinations with the other rack portfolio.
The vialsamplers transport mechanism uses an X-Z-Theta movement to
optimize vial pick-up and return. Vials are picked up by the gripper arm, and
positioned below the needle station. The gripper transport mechanism, the
needle station, and the hydraulic unit are driven by motors. Movement is
monitored by optical sensors and optical encoders to ensure correct
operation. The metering device is always flushed after injection to ensure
minimum carry-over.
The standard analytical head of the metering device provides injection
volumes from 0.1 – 100 μL for the 1260 Infinity II Vialsampler and 0.1 – 20 μL
for the 1290 Infinity II Vialsampler version. The 1260 Infinity II Vialsampler
can be operated at up to 600 bar (G7129A) or 800 bar (G7129C) while the 1290
Infinity II Vialsampler has a pressure limit up to 1300 bar. A head with
extended volume is available for injection volumes from 0.1 – 900 μL and can
be operated up to 400 bar.
The six- port injection valve unit (only 5 ports are used) is driven by a high-
speed hybrid stepper motor. During the sampling sequence, the valve unit
bypasses the vialsampler, and directly connects the flow from the pump to the
column. During injection and analysis, the valve unit directs the flow through
the vialsampler. This ensures that all the sample is completely injected into
the column. Any sample residue is removed from the metering device and from
the needle before the next sampling sequence begins.
16 Agilent InfinityLab LC Series Vialsamplers User Manual