22 ANALYTICAL AND LABORATORY EQUIPMENT


Columns feature solid-core particle technology


Waters Corporation has expanded its family of CORTECS Columns with the introduction of a new line of 2.7 micron silica-based, solid-core particle columns. The new set of columns is the latest


addition to the Waters CORTECS family ofcolumns. Waters introduced the first a set of 1.6 micron solid-core particle columns in 2013. The new columns were shown at


HPLC 2014, the 40th Annual Symposium on High Performance Liquid Phase Separations and Related Techniques. Designed for analytical scientists


who need to maximise performance on their existing LC systems, CORTECS 2.7 micron Columns run at lower pressures while delivering high efficiencies. This gives the scientist the flexibility to use longer column lengths to improve resolution or higher flow rates to speed instrument analysis times and increase throughput.


Available in C18+, C18, and HILIC


chemistries, Waters offers the columns in 48 unique column configurations. “With the introduction of CORTECS


2.7 micron Columns, Waters now gives chromatographic laboratories the ability to improve the resolution, speed, and sensitivity of their HPLC separations,” said Michael Yelle, Vice President, Consumables Business Unit, Waters Division. “The advanced solid-core particle design of CORTECS 2.7 micron


Ultrasonic ‘hands’ can grip microparticles


A team of researchers from the Universities of Bath, Bristol and Dundee in the UK has discovered for the first time that ultrasonic waves can be used to grab several microparticles at a time, effectively creating a pair of invisible ultrasonic ‘hands’ that can move tiny objects, such as cells, under a microscope. Using tiny plastic


spheres the size of biological cells, they found that objects could be moved along independent paths and then carefully brought together. These capabilities provide new tools to study cells which could help biologists or medics perform a variety of delicate tasks such as sorting or assembling cells into patterns for tissue engineering, stem cell work and regenerative medicine. Researchers from the University of Bath’s


Department of Mechanical Engineering worked in collaboration with the University of Bristol’s Department of Mechanical Engineering and the University of Dundee’s Institute for Medical Science and Technology, and recently published their findings in Applied Physics Letters.


www.scientistlive.com Dr Charles Courtney, a researcher at the University


of Bath and one of the paper’s authors, said: “We have shown that sophisticated microparticle manipulation is possible using a relatively simple desktop apparatus that can be used with a standard microscope system. We believe this has the potential to radically improve results in bioscience labs where pinpoint positioning of cells is a useful research tool.” Using a specially


developed array of 64 ultrasonic loudspeakers the researchers generated the complicated patterns of ultrasonic waves


needed to create up to three separate particle traps, small regions to which particles are confined by the sound field. The traps are formed using acoustic waves to create very small vortices or whirlpools of sound which pull in and hold the objects in place. The positions of these whirlpools can then be adjusted by controlling the output of an array of tiny loudspeakers to capture the particles.


For more information, visit www.bath.ac.uk


Columns together with Waters’ 40+ years of column manufacturing expertise put these columns at the head of their class in terms of overall chromatographic performance with the market leading batch-to-batch reproducibility, robustness and quality our customers have come to expect from Waters.” The new columns complement


Waters CORTECS 1.6 micron Columns for UltraPerformance LC (UPLC) introduced in 2013. CORTECS 2.7 micron Columns


are fully scalable to CORTECS 1.6 micron Columns, thus allowing separation scientists who currently run HPLC separations the ability to future-proof their laboratories and seamlessly transfer or migrate their separation to UPLC. CORTECS C18+ columns deliver


excellent peak shapes for basic compounds and impart unique selectivity while being a superior low bleed, formic acid-friendly option for LC/ MS applications. CORTECS C18 Columns are general-


purpose, high-efficiency, RP columns offering balanced retention of acids, bases, and neutrals at low and mid-range pH.


CORTECS HILIC Columns are designed


for the retention of extremely polar analytes utilising hydrophilic interaction chromatography (HILIC).


For more information, visit www.waters.com/cortecs


Laboratory mixer with new touchscreen panel


With the use of a touchscreen panel, Lödige has further improved the handling of the L-series of laboratory mixers. The development was focused on user-friendly


visualisation of the controls, for example with a clear and uniformly designed screen display. The basic functions are performed using easy-to-understand icons. This enables intuitive operation of the mixer. Furthermore, fast start-up of the machine pays off


in day-to-day running. For example, the mixer shaft speed is infinitely variable via the touchscreen panel. In addition to comfortable handling, the touchscreen panel offers a further decisive advantage: the smooth surfaces guarantee problem-free, thorough exterior cleaning. With the replacement of pushbuttons in the


L-series of laboratory mixers, Lödige has expanded its portfolio of mixers with a touchscreen panel for the product and process development or pilot operation. The basic version of the MGTL laboratory mixing granulator is also available with this equipment feature.


For more information, visit www.loedige.de


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