GE AKTA avant, User Manual

Page: 66 / 538

Usage Air volume detected Parameter
ÄKTA avant 150 ÄKTA avant 25
Detect even small
air bubbles 30 μl 10 μl High
Ports of Inlet valve A and Inlet
valve B
The following illustration shows the ports of Inlet valve A and Inlet valve B.
Description Port Description Port
Inlet from Quaternary valve Q Buffer inlets of Inlet valve A A1-A7
To the System pumps Out Buffer inlets of Inlet valve B B1-B7
Function of Quaternary valve
The Quaternary valve is used for automatic mixing of four different solutions. The Qua-
ternary valve opens one inlet port at a time, and the different solutions are mixed in the
Mixer to form the desired buffer. The opening time in the switching valve is controlled
by the system.
The volume for each inlet port opening increases stepwise when the flow increases. To
obtain a homogeneous buffer composition, make sure to use a mixer chamber volume
suitable for the flow rate of the method. For further information, see Select Mixer chamber,
on page 157.
66 ÄKTA avant User Manual 29035184 AE
3 Standard instrument modules
3.4 Inlet valves