Chromatography Forum

Hi.

We have recently upgraded all our non MS chemstations to version B, service pack 2. In doing so 4 of our systems have lost the ability to right click and skim a peak.
By this I mean that it was possible to select the skim tool and right click on the baseline. At this point the mouse pointer would be locked to the baseline so moving the mouse would force the pointer to follow the baseline left or right.
We have one copy of version B that this still works on but I can't spot the difference between the working and non-working systems.

Has anyone came across this before ?

Don't get me wrong the loss of this facility isn't earth-shattering but it does make life a little easier.

Thanks

Rich

If needed screen shots can be attached for clarification.

Which of the "B" versions do you have? The current is B.04.

I can't speak specifically to your issue, but my experience with the last several ChemStation versions is that they are gradually morphing toward a different interface, and I have seen several things disappear.

The integration section has been upgraded from the A series, and now has separate options for skimming and valley integration methods. I would guess that the capability that you are looking for has been phased out.

And you also might look through the recent discussion on manual integration. The generally feeling among the more experienced users is that manual integration should be discouraged. You should spend some time learning the new integration capabilities (they are not intuitive to learn, so be patient), and try to get the system to do it for you.

We are currently using B.02.

With regard to not using manual integrations.... As far as I know the type of integration we are using cannot be automated within chemstation. Its a fairly common type of integration within the environmental field but isn't used many other places (to my knowledge).

I'm confident the facilty hasn't been phased out because all our sytems are running the same version of chemstation but only a few of them are having this problem. Its worth pointing out that there were upgraded from various versions of version A to this version of version B.

Rich

I'd be deeply concerned about a method that yields chromatograms that cannot be integrated automatically. Chemstation, like any good hplc software, can (used correctly) find and integrate any peak that's worth looking at. If it can't find the peak, I'd be very worried about the quality of the peak, and wonder whether there's any value in trying to integrate it anyway...

And tangent skims are a horrible aberration; they are absolutely never right.