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Zoran Kitanovski




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    Sky™ Inlet Liners
    "I recently learned from my colleague about the novel inert GC Sky Liners from Restek for demanding applications. I order them (splitless, single taper) for my work whose aim was to develop an injector-port derivatization of triterpenoids for their determination in vegetable extracts. During the screening and optimization steps, I have used different derivatization agents, such as silylation (BSTFA, TMSI, MTBSTFA) and alkylation (tetramethyl ammonium hydroxide) reagents. I have observed stunning stability of the liners, without deterioration of the peaks and lost in sensitivity even after > 100 injections of standards with derivatization reagents (for injector-port or on-line derivatization). Using the Sky Liners I didn't have to clean and deactivate the liner frequently (as I was supposed to do) and I greatly reduced the down-time of the instrument and increased the productivity of my work."

    Application area: GC determination of triterpenoids in plant extracts

    15 October 2014
    • Ease of use5 out of 5
    • After sales service5 out of 5
    • Value for money5 out of 5
    Average    

    5 out of 5



     

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    XBridge® HPLC Columns
    "I used XBridge Amide 3.5 um column for HILIC separation of atmospheric dicarboxylic acids. I found it very reproducible over a large period of time (> 3 months) while being extensively used during initial method development (use of different mobile phase buffers, pHs and organic solvents), method validation and application to atmospheric particulate matter. After more than 1000 injections with proper change of the guard, the analytical column preserved its initial efficiency and gave me the needed selectivity for separation of the various atmospheric acids. The column is still in good shape and operable. No increase of the column backpressure was observed during its use. We are very satisfied with the product and the level of service provided by Waters representatives."

    Application area: Dicarboxylic acids in atmospheric particulate matter

    7 August 2013
    • Ease of use5 out of 5
    • After sales service5 out of 5
    • Value for money5 out of 5
    Average    

    5 out of 5



     

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