Agilent InfinityLab LC Series RID User Manual
25
1
Introduction to the Refractive Index Detector
Flow Path
Figure 8
Flow path with the Purge- and Recycle-Valves = OFF
*
COM
COM
NO
NC
NO
NC
Metal union
block
Sample cell
Reference
cell
WASTE
RECYCLE
Purge valve
Recycle valve
COM = COMMON
NO = NORMALLY OPEN
NC = NORMALLY CLOSED
IN
Grey lines = flowing path
Black lines = immobilized mobile phase
*
The T-connection in the metal union block results in both sides of the flow cell (sample
and reference) always being exposed to the same pressure