Hitachi CHROMASTER 5160 Instruction Manual page 814

Syringe valve
4
Plunger
wash
vl
+ va/2
+ vd
Syringe
Wash
fluid1
(5) Movement of the needle and discharge of the lead volume
After the needle has moved into the injection port, the
injection valve is switched to inject the sample.
Buffer tube
Injection valve
3 2
1
5
Wash
pump
P
3-way solenoid valve
Degassing
unit
vd :Dead volume (the instrument inside parameter)
vi :Injection volume (the sample net volume to the flow path)
vl :Lead volume (forward part, cut volume)
vr :Rear volume (rearward part, cut volume)
va :Air volume (the air volume which sample is sandwiched.)
Wash
fluid2
Needle
vl
Injection port
5
4
Loop
6
Waste
1 2
solution
From Pump To Column
2 - 18
3
Waste
solution
Wash port
Rack
Sample