Lower Flowrate at End of Method

Question

I want to have the pumps retain the last flowrate from the method and NOT load initial conditions. 
 I am using Chromeleon 7.3 with a 1290 pump and vial sampler. I would be happy to hear how Chemstation does it too (as maybe it will help somehow). 
 With Chromeleon 6.8 I was able to have my pumps lower to 0.1mL/min by setting the flow using a trigger. I tried that here and it always loads the initial flowrate after the method. The idea of returning to initial seems so backwards to me there has to be a way around that. 
 I ask because this is a walkup instrument for chemists. So, a 'shutdown' or 'standby' method solution will not work. The alternative would be to have the flow change PRIOR to inject. BUT I can't get it to do that. It always wants to adjust flow AFTER inject. 
 I have tried setting the initial flow to 0.1 mL/min. THen at time 0.00 1mL/min. However, it waits until after the injection to apply this. If I move the command it changes my initial to 1mL/min. 
 Thank you

kbusch · Accepted Answer

Hello, 
 In chemstation, there is the ability to set a shutdown macro or a standby macro. 
 This is typically how the methods are working in chemstation as well. When the method is finished, the instrument goes back to the initial flow. A way to do it would be to have a method with no injection and a flow rate of 0.1 ml/min. Add this method as the last method of the chromeleon sequence and this will then apply this ending flow rate. Keep timepoint zero and initial flow 0.1 ml/min if this is the desired idle flow.

Lower Flowrate at End of Method

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