PROCESSING TECHNOLOGY 31


possible with rocker valves. Tis eliminates the waste of expensive reagents, as well as preventing cross contamination and increasing process safety.


Te flushing characteristics of the second-generation flipper valve are related not only to the valve’s internal volume, but more principally to its internal design. Tis becomes clear when comparing Bürkert’s Type 0127 rocker valve with the company’s new Type 6650 flipper isolation valve. Te internal volume of the Type 6650 valve is two times smaller than the rocker valve’s volume. Moreover, the 6650 is only 4.5mm wide – much smaller than previous models, yet it delivers greatly improved flow rates. Te major advantage of this size reduction is that equipment and instrument manufacturers can pack more valves into the same space for greater functionality. Tis provides savings in laboratory costs as equipment and instrument sizes can be reduced, overall. In addition to


its size advantages, Burkert’s second generation flipper valve also delivers improved performance. Te valves have short – and reliable – response times; and have high repeatability and also excellent flushing characteristics.


Tese advantages – combined with the valve’s reduced size – mean that the 6650 valves are particularly suitable for the handling of liquids with micro plates where high- precision dispensing and small dimensions are required.


Te Type 6650 is the latest introduction to Burkert’s MicroFluidic range of products for analytical, medical and biotechnical applications.


Te range includes miniature solenoid valves and micro-pumps for applications with neutral, aggressive and highly purified media.


Tese products are extremely proficient in the handling of fluids


where dead legs, internal volume, chemical resistance and precision are paramount.


Providing the highest fluid control performance in the smallest possible space, Burkert’s new Type 6650 sets a new standard for miniature solenoid valves employed in clinical, life science, analytical and fluid handling equipment.


Suitable for use on vacuum up to 7 bar, and providing medium isolation for aggressive fluids, the direct-acting Type 6650 is just 4.5mm wide yet outperforms comparable 10mm and 16mm designs.


Te Type 6650 provides the ideal solution for manufacturers with valve applications requiring fast response times, high reproducibility, zero pumping and excellent flushing characteristics.


Te valve’s optimised design ensures reproducible and precise dosing, effective rinsing capability, and


is suitable for use with aggressive chemicals.


Key to the Type 6650 valve is Bürkert’s Flipper Technology. Tis employs an elastomer element that moves between two opposite valve seats under the force of permanent magnets fixed to the flipper element; opening one as it closes the other. Tis operation requires only a temporary pulse, so is characterised by its short response time. It also provides high reliability and low wear.


With the two nominal orifice sizes of 0.4mm and 0.8mm available, and both 2/2 and 3/2 functionality, the Type 6650 is ideal for applications where the highest fluid performances are required in the smallest space – in dosing for example where the Type 6650 opens up new possibilities, in particular, in connection with 384- well Microtiter plates.


For more information. visit www.burkert.co.uk


T: 01746 764311 F: 01746 763375 www.kecol.co.uk sales@kecol.co.uk


Over 25 years experience in pumping viscous materials for the World’s leading food, pharmaceutical and cosmetic manufacturers. From triple concentrate tomato paste through to petroleum jelly and mascara, Kecol equipment will tackle the most viscous materials quickly, cleanly and efficiently and as a manufacturer, we have the flexibility to design bespoke pumps and systems to the most demanding requirements.


Please contact our offices for further information.


KECOL STILL UK No.1 FOR VISCOUS PUMPING SOLUTIONS Circle 31 or ✔ at www.scientistlive.com/elab


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