2D-LC User Guide 41
2 Concepts of 2D-LC
Active Solvent Modulation (ASM)
A full switching cycle of the ASM valve has 4 positions. Positions 1 and 3 are the
same as for the standard 2D-LC valve G4236A. The ASM valve has two additional
positions in step 2 and 4. In both steps, the ASM capillary is in the second
dimension and dilutes solvent in deck A and B, respectively.
Table 1 Switching cycle position names in the software (SW)
1 Classic 2D-LC:
Deck B in
2
D
2 ASM Position:
Dilute Deck A
4ASM Position:
Dilute Deck B
3 Classic 2D-LC:
Deck A in
2
D
Position 3 (Port 1 > 3 > 8 ASM) in the UI can be used to flush all lines in the ASM
Valve.
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