James_Ball wrote:
If the 5890 has Electronic Pressure Control for the inlet it should allow you to set split flow from the computer. If it still has the needle valve flow control then it won't be possible.
If it is full EPC then you can always make a standby method with low column and split flows. Then you just load that method into Chemstation before running a sequence(at least you can if you use MSDChemstation, not sure about the other one) and it will load the standby method once the sequence is finished.
See above. Either make and load a "low flow" Method and have that load on last line of the Sequence, or the software should have a gas saver function that you can incorporate except when you need the higher flow at the beginning of the injection.
Of course another way to cut helium use is to eliminate it and use a hydrogen generator and hydrogen carrier gas.
I've had no issues with Agilent flow control since back in the 5830/5840 days.