Agilent Technologies 1200 series - Sampling Unit

Agilent 1200 Series Autosampler Reference Manual 223
Introduction to the Autosampler 7
Sampling Unit
The sampling unit comprises three main assemblies; needle drive, metering
device, and injection valve.
The sampling units for the standard and the preparative autosamplers are
different.
NOTE
The replacement sampling unit excludes the injection valve and metering head assemblies.
Figure 34 Autosampler Sampling Unit
Metering device
Injection valve
Needle drive