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- ryoboyle likes camelia's reply Re: Calibration in OpenLab DA
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- mmandell likes oshin-sebastian's discussion Multi-level Calibration in EZChrom
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Hi, I'm currently setting up our first system using OpenLab CDS 2.2 including the Data Analysis module. I'm struggling to understand how the calibrations work, hope someone can help with a couple of questions: 1) I've set up an external standard processing method for my validation study, which seems to have worked ok, in that the samples have… Show more
in the Injection results window select Bracketing mode then using the drop down arrow select Custom, add an opening bracket [ to the first Cal standard and a closing bracket ] to the last cal standard. Use Clear all calibration on Cal standard 1 as before. Exclude any standards if permitted by applying the sample run type instead of standard as…
I have 7890A GC and 5977B MS which are connected to the instrument via LAN to the pc and the question is should I connect the pc to the network via net cable so i can use google or yahoo etc....
1.17 MS1 RF driver cannot maintain the requested mass setting fault. This error message will then switch to a fault cleared message. Does anybody have any information they may share about this fault and how it may be fixed? Thank you.
Hi Darren, I have same problem but I have LCMS (QqQ) instead of GCMS. I don't know if I will have same solution with me too. Can you please post the pic of the aluminum/stainless steel leads that were touching the chassis or can you please describe (along with the location) it so that I can try to correct the error? is it IN or OUT of QqQ ? If it…
We use VARIAN VS Series helium mass spectrometer leak detectors (MODEL MR15). This detector shows leak rate by atm*cc/s but we want to know the leak rate by ppmv. So, could you give us the "total gas flow rate [atm*cc/sec]" @ 0.25 torr ? Thank you very much
Hi, I am running a 7890A with dual ECD's for multiple methods including 504, 505, 515, 552, 8081, and 8082. We got a super inert splitless injection port and weldment because we were having a lot of Endrin breakdown problems, and it seems to help but not eliminate the Endrin breakdown. I replaced our gas trap in January ( triple trap for oxygen,… Show more
Is switching to a split injection possible? We run 608/8081 on our 6890. We used to run splitless with the drilled hole uniliners and I frequently had trouble passing the endrin degradation check. I ended up switching to the Restek topaz precision liner with wool and a 10:1 split. My peak shape improved significantly and I haven't had difficulty…
Hi, I understand that the classical Short report style will generate an excel file named report01.xls with different tabs in it containing tons of information. How does chemstation generate it, and can I actually modify how the excel is generated, i.e. only output the values in need in specific pages? Thanks.
Good Morning, We are currently using a 5975T on Chemstation and have experienced "grass" on our spectra before and usually either a dirty source or HED power supply issue. However, this occurred during a tune as well as when performing analysis. We currently have an issue that needs addressing, so when performing analysis we get grassing:… Show more
I have not used a 5975T but I have seen this behavior on other 597x systems. All proved to be either a faulty multiplier or HED detector. The one exception was finding barely visible "lint" around the detector. Easily cleaned with a can of air. It does not look like chemical noise even though you see it on injection. You may not see it in…
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