What do each of the valve state colors shown in Omnion correlate to on the valve?
Checking valve state within Omnion
In the Timing tab of the run properties window in Omnion, small colored icons indicate what state the valve for each channel is in. When the valve icon is red, sample should be going through the sample loop and the valve is in the load state. When the valve icon is green the valve is in the inject state. By clicking within the box you can manually change the state of the valve. This is very helpful for determining if the valve is turning properly as well as for backflushing and cleaning the valve.