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Paul Steenkamp




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    Pinnacle® DB Biphenyl Columns
    "We recently purchased a 100 x 2.1 mm (3 um) column for evaluation. Delivery was prompt and local support available at all times. A method to separate green tea catechins on UPLC had to be transferred to HPLC with both UV and MS detection. This column does not react as other phenyl or hexyl-phenyl columns by giving the best separation using methanol and water (0.1% (v/v) formic acid). This type of mobile phase usually gives good separation and peak shape but did not work for this column chemistry. Replacing the methanol with acetonitrile, using the same shallow gradient profile as before, excellent separation was obtained between all the compounds. What is truly remarkable is that this column could handle massive concentration differences without distorting peak shapes or loss of resolution. The column was very easy to use, equilibrated fast and gave low back pressures at 40 deg. Celsius. Reproducibility inter- and intra-day was excellent. A great column I would love in UPLC fo"

    Application area: Biotechnology and natural products

    28 March 2013
    • Ease of use5 out of 5
    • After sales service4 out of 5
    • Value for money5 out of 5
    Average    

    5 out of 5



     

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    Elix® Advantage Laboratory Water Purification System
    "The system was installed and has been running for three years with no problems. It is easy to use and the water quality is constant and of LC-MS grade. Maintenance is guided by on-board timers that warn you when to do preventative maintenance."
    8 December 2011
    • Ease of use5 out of 5
    • After sales service4 out of 5
    • Value for money4 out of 5
    Average    

    4 out of 5



     

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