• 96 well plate Film Seal

    The seal we used to use for our 96 well plates, Item #82018-844, 3PK, pricing of $80.58/PK, VWR FILM SEAL THERMO PC PK100, has been discontinued. Does anyone have any strong feelings about a type of sealing film they...
    created by murphymj
  • How To Pump Down (Start) the GC/MSD - EI - MassHunter

    Agilent Support Engineer Insights   This Information Applies To: Agilent 5977B GC/MSD with MassHunter GC/MS Acquisition Software   Description: This article describes the procedure to safely pump down (start...
    last modified by carlos_vargas
  • How To Vent (Shut Down) the GC/MSD - EI - MassHunter

    Agilent Support Engineer Insights   This Information Applies To: Agilent 5977B GC/MSD with MassHunter GC/MS Acquisition Software   Description: This article describes the procedure to safely vent (shut ...
    last modified by carlos_vargas
  • Electronics checks for 5975 GCMS

    Are there electronic checks that can check to make sure a filament isn't failing because of an electronic issue? We had a filament die, which isn't too surprising considering it was nearly ten years old (teaching ins...
    last modified by ellisja
  • ICP-MS Error: 1214 RF amp FET over temperature

    Hi everyone,   We are getting error #1214 on our 7500ce ICP-MS using Chemstation that is preventing us from enabling the plasma. There are no other errors that come before it on the error log. A PM was performed...
    created by dhu2002
  • APCI reference ions with QTof 6550

    Im using 6550 with APCI. But i can not find any of the reference ions. Tuning mass calibration is okey. what could be the isue?
    created by morenjorogeh
  • Loosing C35-C40 standards sensitivity over time

    Hi,   I have a question. I loose the sensitivity of C35-C40 standards. I usually inject a standard mix (C21-C40) but over the time I loose the high chain length carbons. Either I see very little peaks or I see n...
    last modified by zkarpati
  • Does ammonium fluoride assist ionisation? (and how?)

    Hi I recently read a report in which 1mM ammonium fluoride was added to the LC-MS mobile phase to increase sensitivity/ionisation. Can anyone verify this is effective for ESI positive mode analysis of drugs? Can ...
    last modified by peter.stockham
  • 2.8 High vacuum gauge is reading too high a pressure

    Working with a 6470 lc/tq and MS40 pump. The past three mornings, I've come in to find the pump not running with the error "QqQ fault detected: 2.8 High vacuum gauge is reading too high a pressure." Keep in ...
    last modified by carcuri13
  • Agilent 6460 instrument communication error

    I have been tasked with getting an Agilent QQQ up and running. I am not experienced on the instrument or LC/MS in general. I was able to get the instrument started from a complete shutdown and it passed a check tune a...
    last modified by drmbutton
  • Is there a way to turn off the detector mid-run so that a solvent peak can be removed, while still getting peaks both before and after the solvent?

    I'm decently familiar with Agilent's ChemStation software, but this is tricky. I'm developing a method for analyzing ethanol solvent impurities, and there's potentially 8 peaks. While a solvent delay works for testing...
    last modified by rider.barnum
  • Problems tuning after installing new electron multiplier on Agilent 5975C

    My lab recently changed the filaments and installed a new electron multiplier on our Agilent 5975C. When I try to tune the peaks all seem like noise and then if gives me an error for the tune reading " Tune action Sto...
    last modified by aacos095
  • Lubricants for the Helium Spectromass Varian PR02 and MD30 Vacuum Pumps

    I need lubricants for the Helium Spectromass Varian PR02 and MD30 Vacuum Pumps. Are there any recommendations for the brand and specifications of the vacuum pump oil that I can buy at a local shop (Indonesia). I am ha...
    last modified by esaps
  • Iris driver cannot maintain the resquested voltage

    Hi everybody,   We have a GC 7890A with a 7000 triple quad MS. Lately we have cleaned the source as usual and we have obtained a not so good result with the autotune (counts for both analyzer and all ions five ...
    last modified by frossi
  • Difficulty with the HED supply "error, MS fault 2  2 

    Am having the above error message on agilent 5975 MSD whiles checking for Air and water. The process cannot continue and had to shutdown the instrument without venting. Though I suspect the HED power supply, I would l...
    last modified by pij
  • How to start up my system after it has been left unused for a year

    Hi Community, I'm unfamiliar to GCMS systems and I'm assigned to work with a 7890B GC system and 5977B MSD system. The system has been sitting unused (completely turned off) for about a year and I'm not sure what's th...
    last modified by minhlele10
  • MSD

    Instrument cannot Pump down because there's oil in the hose.
    last modified by pij
  • MassHunter S/N

    Hello,   On company that I work, in Portugal we have a GC-MS with MassHunter software. Since the implementation of the software for the GC-MS we are manually using the formula below for the calculation of the EP...
    created by plfaria
  • Can't connect to QToF (6545)

    Hi, We are having trouble connecting to our 6545 QToF (our LC is the 1290). We can start MassHunter Acquisition but if doesn't register that it's connected to the machine and can't issue commands (e.g. turning on the...
    last modified by wdwvt
  • intermittent electronic noise on a 5975C MSD

    When I do a full scan in manual tune I get a bunch of  electronic noise starting around mass 500.   I know it has something to do with the analyzer.  I cleaned the source and was able to swap the a...
    last modified by stevenh12stevenh12