• Polar stationary phases and hydrogen as carrier gas in GC

    Hello Agilent,   Could hydrogen used as carrier gas in capillary gas chromatography harm or degrade some types of polar stationary phases?   Best regards - Lars Kürstein, Copenhagen
    james_jenkins
    created by james_jenkins
  • Guard column & cartridge for Agilent ZORBAX Extend-C18 Column

    Hi All,    I would like to purchase a guard column kit and related cartridges for the Agilent ZORBAX Extend-C18 Column (P.N. 763953-902). I was lost through navigating on the Agilent website and c...
    jackieliu
    last modified by jackieliu
  • GC Column to measure Ethylene

    Hello everybody, good morning We intend to measure ethylene on a GC-2014 SHIMADZU.   Isotherm: 40 ° C Injector temperature: 120 ° C Detector temperature: 250 ° C Run: 2 minutes Carrier gas: Helium ...
    mcarito
    last modified by mcarito
  • GC Column

    Hi , Which column for GC works for phases G26 and G37? (in a single column) Regards
    mcarito
    last modified by mcarito
  • Solvent selection for GC column?

    I'm not sure which solvent is suitable for HP-Chiral-20B column which is mid-polar. Do I need to concern about polarity that much since it is GC not HPLC? I saw some researches used hexane and also ethyl acetate....
    james_jenkins
    created by james_jenkins
  • alternative capillary column to 20% G24 on support S1AB

    in halothane USP monograph (20% G24 on support S1AB  phase) is required for organic impurities analysis but it is packed column, we want to find alternative capillary column  and as a general question how to...
    james_jenkins
    created by james_jenkins
  • Fatty peracids and ethanol on GC?

    Hi I am looking for some tips to measure esters, carboxylic acids and per-carboxylic acids in gas chromatography. I am afraid that peracids or hydrogen peroxide would be negative for the column I have available (Agile...
    james_jenkins
    created by james_jenkins
  • Pesticides in Fish

    We have a new Agilent GCMS QQQ - 7890B+7010B. Our task is to analyze residual amounts of pesticides in a fish matrix. Pesticides are polychlorinated biphenyls and organochlorine pesticides (Hexachlorocyclohexanes, H...
    kukushkin_s
    last modified by kukushkin_s
  • HPLC Columns

    Hello everyone I hope you are all in good health, I need your help again. What are the best options for these columns? L1 (C18) Phenomenex Luna 10 u C18 (2) 100A 300 x 4,6 mm ; 10 µm L51 Chiral Kromasil 25-AmyCo...
    mcarito
    last modified by mcarito
  • Which agilent column is compatible with this 35005-102130 Thermo Scientific LC Hypercarb?

    Which agilent column is compatible with this 35005-102130 Thermo Scientific LC Hypercarb?
    mcarito
    last modified by mcarito
  • Columns Agilent compatible

    What columns Agilent are compatible with these? Prevail Organic Acid 53 x 7 mm 3um Ultra Aq C18 100 x 3 mm 3um Regards
    mcarito
    last modified by mcarito
  • Quechers recommendation

    Good afternoon, we need to analyze salmon and we currently use these Quechers•              Bond Elut QuEChERS “Original Method” ...
    mcarito
    last modified by mcarito
  • Guard Column for 757700-902;959961-906;880975-912

    Guard Column for 757700-902;959961-906;880975-912
    mcarito
    last modified by mcarito
  • FID Jets for Agilent 8890 GC compared with 5890/6890/7890 GC

    Hello,   I have just changed a FID weldment from "FID adaptable fitting" to "Capillary optimized fitting" on a Agilent 7890A GC. The FID jet dimensions mounted in the new FID weldment are quite new to me... Ther...
    james_jenkins
    created by james_jenkins
  • Column for SEC-MS

    I have a fairly hydrophobic polymer that is ~20,000Da and need to quantitate an impurity that is ~600 Da. Reverse-phase on C18 or phenyl doesn't provide adequate resolution and SEC-RI has some issues with the impurity...
    abmoore
    last modified by abmoore
  • What SPE cartridge to use?  ochratoxin A 

    What SPE cartridge to use? ochratoxin A , similar to OchraTest WB Vicam or MycoSep® 229 Ochra    Regards
    mcarito
    last modified by mcarito
  • Hi there, I would like to buy a guard column for a ZORBAX SB-C18, 4.6 x 150 mm, 3.5 µm LC column but I´m having a hard time in the Agilent web site. Which part number is the correct one?   Thank you

    Hi there, I would like to buy a guard column for a ZORBAX SB-C18, 4.6 x 150 mm, 3.5 µm LC column but I´m having a hard time in the Agilent web site. Which part number is the correct one?   Thank you
    edmundo
    last modified by edmundo
  • Which guard column kit for Zorbax 300-C18 HPLC column

    Dear All,   I would like to buy a guard column kit for a ZORBAX 300-C18 Narrow-Bore HPLC column, 300Å, 2.1 x 150 mm, 5 µm  (part # 883750-902) but I got a bit lost in the Agilent web site :-) &#...
    thomasch
    last modified by thomasch
  • Moisture in our detector fuel line?

     We are trying to validate a new method, and our area counts are low and inconsistent. Our Hydrogen is from a generator and goes through an indicating filter. I replaced said filter recently, and am seeing it res...
    jason.minter
    last modified by jason.minter
  • Can a customer re-pack a semi prep column?

    I have a customer who has many old stainless steel semi prep / prep columns and is interested in packing them with PLRP-S bulk resin.   I was doubtful this would be possible due to the pressures that would be r...
    clp118
    last modified by clp118