Chromatography Forum

greetings,

As I know, with Empower, I can integrate a range of chromatogram. With Chemstation, I would like to integrate for a range of time (say 5 to 30 min). How do I set that automatically?

I would like to queue a sequence after a sequence that is running (not simply add my samples into the current sequence. How do I set that?

Thanks

Hi

There are at least two ways to do it, first go to data analysis then open up integration events for your detector.

there you can add command lines like: intergration of at 0 min then integration on at 5 min. At least in the past when running GC some argued that it was better to set area reject to like 10000000 initially then set area reject to 0 after 5 min if you needed to adjust the time frame.

do not forget to save the updated integration events


No clue on the other question, never looked for it.

greetings,

I would like to queue a sequence after a sequence that is running (not simply add my samples into the current sequence. How do I set that?

Thanks

It's so simple with ChemStation.
Sequence>Sequence Parameters>Post-Sequence Cmd/Macro

Real challenge is to write such macro, which would load and run another sequence.

Wojtek

We do similar to what krickos stated: Integrator off at time 0, then Integrator on at desired time, then Integrator off at later time, if desired.

We had this question once before. Here was my reply

You can use the ChemStation Scheduler as follows. You will first need to know how long the first sequence will run. Assume that it takes 4 hours to run the first sequence and you wish to start it at 17.00.
1. Enter the date and for the time enter 17.00.

2. For the command, type in RunSequence.

3. For the mode leave as "Do Once"

4. On the second line enter the date and 21.00 for the time ( 4 hours plus in this exanple.

5. For the command enter LoadSequence "C\Chem32\1\Sequence\","Name.S". The first entry should be the path where you sequence is stored and the second entry the name of the sequence.

6. Leave the mode as "Do Once"

7. On the third line, enter the date and the time as entered in 4 above plus 5 minutes.

8. For the command enter RunSequnce

The scheduler will then start the first sequnce at 17.00. Four hours later it will load the second sequence and start that 5 minutes later.

Gasman

The first question was solved.

I will try the second one.

Thank you guys so much!

I would like to queue a sequence after a sequence that is running (not simply add my samples into the current sequence. How do I set that?

Thanks

The simplest way is to use chainsq.mac macro from the User Contributed Library

Chemstation CD\Ucl\Lc_ucl\macros\21\

Garlag,

This macro may only work on the LC ChemStation. On the latest CD, B.04.01(SP1), it comes up as macro 10 in the folder that you mention. Looking at the macro, I see no way that a GC user can enter the path and the name of the sequence(s) to chain.

Gasman

Hello

to use the chain sequence macro, you have to save the sequence you want to chain in the todo folder.
If a sequence is about to end, it looks inside that todo folder. If there is any sequence, it will move it to the original folder and run it.

Regards