Degassing Of Mobile Phase And Wash Fluid - Hitachi CHROMASTER 5160 Instruction Manual

3.4.2 Degassing of Mobile Phase and Wash Fluid

NOTE: For using an ultrasonic cleaner or the like, refer to the
instruction manual of each instrument.
For attaining the full performance of the autosampler, perform
constant online degassing for the mobile phase and wash fluid
by using a degassing unit.
Degassing with the Degassing unit
(b)
(f)
(a)
(e)
(a) Mobile phase or wash fluid
(b) Special membrane
(c) Vacuum container
(d) Solenoid valve
(e) Pressure sensor
(f) Control circuit board
(g) Vacuum pump
(h) Liquid delivery pump
The liquid which needs to be degassed passes through the
special synthetic resin membrane placed in the vacuum
container in the degassing unit. The gas dissolved in
liquid has a small molecular size, and its mobility and
affinity to the resin membrane are higher than those of
liquid.
Therefore, the gas selectively passes through the
membrane and is discharged outside the degassing unit, so
the liquid is degassed.
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(c)
(d)
(g)
(h)