Click through the Procedure steps on the left of the diagram to see an illustration of the buffer flowing through the system.
The high-pressure sample injection and stream-select valves, AVR7-3 and AVR9-8, use the patented make-before-break (MBB) design that prevents pressure spikes when the valve rotates from one port to another, which eliminates baseline interference. This feature is beneficial when using fragile low-pressure columns or flow-sensitive detectors, and prevents pump shutdowns due to transient overpressure conditions. Automated valves enhance system flexibility and convenience. Methods can include automated injection, buffer selection, column switching, and large-volume fraction collection.
BioLogic DuoFlow valves may be used alone or in combinations, depending on the application:
AVR7-3 Valve
AVR9-8 Valve
SV5-4 Select Valve
SVT3-2 Diverter Valve
760-0401 Kit for rebuilding the AVR7-3 automated sample injection valve (#760-0406)
760-0403 Kit for rebuilding the AVR9-8 stream-select valve (#760-0408)
760-0411 Kit for rebuilding the SVT3-2 diverter valve (#760-0410)
760-0408 Pkg of 1, high-pressure valve, 9-port, 8-position, 3,500 psi (233 bar) limit, for use with BioLogic DuoFlow system
760-0410 Pkg of 1, solenoid valve, 3-port, 2-position, 30 psi (2 bar) limit, for use with BioLogic DuoFlow system
750-0415 Pkg of 1, 5-port, 4-position solenoid valve, 30 psi (2 bar) limit
760-0406 Pkg of 1, high-pressure sample inject valve, 9-port, 8-position, 3,500 psi (233 bar) limit, for use with BioLogic DuoFlow system
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