Introduction to the Well-plate Sampler 6
1100 Series WS MWS Reference Manual 205
Injection-Valve
A high pressure 6-port/2-position-valve to direct streams of mobile phase and
sample to different directions (e.g. via loop to column or directly to column).
The two-position 6-port injection valve is driven by a stepper motor. Only five
of the six ports are used (port 3 is not used). A lever/slider mechanism
transfers the movement of the stepper motor to the injection valve. Two
microswitches monitor switching of the valve (bypass and mainpass end
positions). The injection valve has a ceramic stator, Vespel rotor seal (Tefzel
seal available), and stainless-steel head. Three screws hold the head and
internal components in place. No valve adjustments are required after
replacing internal components.
Tabl e 56 Analytical head Technical Data
Standard 100 µl
(G1367-60003)
Micro 40 µl
(G1377-60013)
Number of steps 15000 60000
Volume resolution 7 nl/motor step 0.7 nl/motor step
Maximum stroke 100 µl 40 µl
Pressure limit 400 bars 400 bars
Plunger material Sapphire Sapphire
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