Hi acraig First replace saptum until if you don't detected leak because sometime tiny leak in saptum cause low sensitivity. Second sometimes over tightening the ferrule connection of column to injector cause constriction the flow and reduce analyte at…
Hi!
I've got a SEQ type CC that should be calculated only once during the reprocessing and a peak or group type that uses the result of the SEQ one. Since this the SEQ type CC is calculated inj number * peak number times.... is it possible to avoid…
Are these FID issues only with this instrument or with others in your lab as well. If this is only on this instrument it might have to do with the H2 or air EPCs. If it is on other systems as well, you might want to check your instrument air. I have seen…
Hello,
I have inherited a 5975 MSD and when I go to autotune, there are no peaks present and the tune fails. I get alternating errors "Gain and Offset = 0 and peaks are too narrow" or "Tune action stopped: The valid Range for Ent Lens Offset is 0…
I'm a new GC/MS user and I have the following error: Inlet: Pressure Pre Shutdown warning after changing the column of a Intuvo 9000 Device. The total flow target of 4mL +/-2mL/min fails and the leak rate doesnt' reach values below 11mL/min. Can anyone…
It may. I'll review the Report Template Editor Concepts Guide and your post (@wydnaa) and see how this works .As for how we would calculate this manually, I'd just divide the result but the expected value (in our case 0.02 ppm) and multiply this by 100…
Hi, I am using a 6890 GC in split mode with an isothermal temperature and no flow ramp and operating in constant pressure mode. Please can you advise how using the setting constant makeup flow for the FID detector is different to constant column and makeup…
I have a GC 6850 with an FID. I'll have to upgrade to Windows 10 soon, because Windows will no longer provide security updates for Windows 7. If I upgrade my computer to Windows 10, is there a ChemStation version that's compatible with the 6850 and Windows…
Hello,
Our 6545 QTOF has been idle for a few weeks. When I checked the computer today, I found that "communication failed" errors had started appearing a few days after the instrument was last put to Standby. I'm not sure what happened as I don't think…
My manager is wanting me to add pass/fail system suitability assessments to my reports/processing methods. In order to limit my validation work and minimize the number of report templates that I am maintaining, I am trying to keep the report adaptive…
This Information Applies To: Agilent G1312X and G7112X binary pumps.
Issue:
A blockage before the pressure sensor, e.g. in a pump head, will not give a high pressure or overpressure system error. Instead, the pump may show one of various error messages...
This Information Applies To: Agilent 1100, 1200, 1260 LC Pumps.
Issue:
The following procedure allows the cleaning of residue from the pump's check valves, often caused by polymerization of aged acetonitrile or salt-based solutions that may prevent...
This Information Applies To: Agilent LC Systems
Issue
After analyzing dirty or concentrated samples, some sample compounds may retain in the column and other parts of the HPLC system. If the column re-equilibration after each run is not enough to...
This Information Applies To: Agilent G7167A/B Multisampler.
Issue:
Required when:
The needle is visibly damaged.
Leaks or blockages in the vialsampler are observed, especially between the needle and needle seat.
The limit for the needle...
This Information Applies To: Agilent Autosampler modules G1367A, G1367B, G1367C, and G1367D.
Issue:
The removal and installation of the needle assembly in these older autosampler modules can be tricky and may require patience and the correct technique...
This Information Applies To: All standard analytical scale Agilent 1100/1200/1260/1290 Infinity / Infinity II LC system configurations: Single Pump (Isocratic, Quaternary, or Binary) with Manual Purge Valve. Does not apply to systems with Agilent G7167A...
This Information Applies To: All Agilent LC modules (except hosted modules).
Issue:
When a module does not initialize correctly or it is not recognized by the software, it is recommended to call our Remote Support Representatives to troubleshoot...
This Information Applies To: All Agilent LC pump modules with MCGV installed (quaternary pumps)
Issue:
Shifting retention times: The composition of the mobile phase in liquid chromatography directly influences retention times. If any of the channels...
This Information Applies To: All Agilent liquid chromatography instruments, Lab Advisor
Issue:
The error message 'Could not open channel RD' pops up when performing diagnostic tests in Lab Advisor. Retrying the test is not helping.
Resolution...
This Information Applies To: Agilent Lab Advisor Software for any Agilent LC System.
Issue:
To successfully troubleshoot an Agilent LC system or module, the System Report is an essential resource. Agilent Support representatives may ask you to provide...