Spotlight Pumps, Valves & Liquid Handling New Pump Tubing brings Security to Challenging Chemical Processes


New from peristaltic pump specialists Watson-Marlow Pumps Group is a high performance, long life tubing that is ideally suited harsh chemical applications. The GORE High Resilience Tubing: Style 400 is an expanded PTFE multi-layer tubing featuring high performance Viton®


filler that is able to maintain a stable flow


rate for thousands of hours while pumping aggressive chemicals. This construction makes this new tubing suitable for a range of aggressive chemicals such as concentrated acids like Nitric and Sulphuric as well as aromatic hydrocarbons like Toluene and Xylene. At continuous pressures of 4 bar, consistent flow rates are achieved throughout the lifetime of Style 400 tubing. While chemicals will attack most other types of tubing, the secret behind the resilience of Style 400 is Viton® GF-600S, a peroxide-cured fluoroelastomer based on DuPont advanced polymer architecture. Performance testing shows that Style 400 tubing offers greater than 50 times longer life than conventional non-reinforced extruded Viton or Fluorel tubes.


Thanks to its expanded PTFE reinforcement, the new tubing also offers superior burst resistance to protect against aggressive fluids release to the environment. Style 400 tubing is currently available with internal diameters ranging from 1.6 up to 12.7mm, with wall thickness from 1.6 up to 4.8mm to provide reliable metering of aggressive chemicals and increased process consistency. The introduction of the durable and dependable Style 400 tubing brings now makes the peristaltic pump the natural choice for aggressive chemicals. Whereas conventional pumps suffer attack when pumping chemicals like nitric or sulphuric acid, or aromatic hydrocarbons such as toluene, the principle of peristaltic pump operation dictates that the fluid only touches the bore of the tube. With no valves or seals to block or corrode and just the simple maintenance of occasionally changing a tubing element, Watson-Marlow adds value to all pumping processes through significantly reduced maintenance, repair and calibration.


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Error-Free and Comfortable Pipetting


The new Integra PIPETBOY pro pipetting aid unites all essential characteristics for productive work with serological pipettes: accuracy, speed and comfort.


Designed for error-free and comfortable pipetting - a new integral white LED light in the PIPETBOY pro provides optimal illumination of the area around the pipette, ensuring accurate pipetting and preventing eyestrain even when dispensing liquids out of an opaque centrifuge tube or dark container.


The PIPETBOY pro enables the user to quickly, accurately and reliably dose liquids just by applying variable finger pressure on the pipettor trigger buttons, changing between drop by drop dispensing or fast motorised pipetting at a adjustable speed of up to 10 ml/sec. Weighing just 190 grams and ergonomically designed to comfortably fit in your hand, the PIPETBOY pro makes even prolonged pipetting effortless.


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Bespoke Vacuum Carts Offer Mobility


New Compact Vacuum Pumps for Filtration and SPE


At Analytica 2010 Vacuubrand launched the new diaphragm pumps ME 1 and ME 1C. They complete the range of compact vacuum pumps for applications like filtration and sample preparation in chemistry, microbiology, wastewater control and other analytical processes. The ultimate vacuum of 100 mbar obtains 90% of atmospheric pressure that is doing the work of forcing the media through the filter. For aqueous filtration, the ME 1 is the optimal choice; however, for more aggressive solvents, the ME 1C with its superior chemical resistance properties is the right solution. The new top mounted power switch and the space saving design offers an easy-to-use functionality even with gloves and requires minimal bench top space. An optional manual control valve with dial gauge enables variable fine adjustment of the pumping speed (max. 0.7 m³/h).


ANALYTICA NEWS


The ME 1 and ME 1C allow an almost maintenance-free use. New designed from the established technology of the three-stage model line MD 1 and MD 1C they stand out due to a proven long diaphragm life.


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Leading vacuum technology company Edwards has designed and delivered 14 bespoke vacuum carts to the UK’s national synchrotron, Diamond Light Source, on the Harwell Science and Innovation Campus, Oxfordshire, which is currently the world’s brightest medium-energy source.


The carts provide mobile high vacuum pumping stations for the synchrotron’s beamlines to help create the optimum vacuum conditions required by researchers. They also have the capability to be fitted with residual gas analysers (RGAs) to analyse the integrity of the vacuum in the beamlines.


New Isolation Valves with Inert Body and Diaphragm Materials


Gems Sensors & Controls announced its new K Series of inert isolation solenoid valves. Constructed from chemically inert materials such as: PTFE, ETFE, EPDM, FKM, FFKM, PEEK, PPS and PSU, the K Series of isolation valves is an excellent choice for any application requiring various levels of chemical resistance and/or sample purity. Typical applications include Liquid Chromatography, Gas Analysers and Water Quality Testers.


Offered in multiple body sizes, port configurations, and a choice of wetted body and diaphragm materials, the K Series is a truly modular platform of direct acting round bodied solenoid valves, offering superb power, flow, durability and life optimisation. This range of inert valves is comprised of three groups: the KS Series features 2-way valves with a Maximum Operating Differential Pressure (MOPD) of 20 PSIG; KM/KL Series are available in 2-way and 3-Way Directional configurations, with MOPDs up to 30 PSIG; and the KV/KW Series offer 2-Way and 3-Way Directional configurations, with MOPDs as high as 20 PSIG.


“Progressive moulding and manufacturing techniques allow Gems to deliver precise, durable orifices and diaphragms in materials that our customers demand,” said Jessica Light, Medical Market Manager, at Gems Sensors & Controls. “Gems is very excited about how well this critical element of inert fluid control enhances our ability to deliver complete fluidic systems to our medical and life sciences customers.”


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The easy-to-use, mobile, ‘plug and go’ Edwards unit means researchers can avoid the cost and space requirements of numerous fixed mechanical pumping stations on each beamline. Evacuating and venting the beamlines using the carts helps to ensure the cleanliness of the systems and so helps in achieving vacuum pressures less than 5 x 10-9 in the beamlines.


mbar


Pressures in the beamlines need to be kept in the ultra-high vacuum (UHV) region to ensure contamination does not migrate into the accelerator sections, to prevent contamination of x-ray optics and, in some beamlines, to maintain cleanliness of the samples under investigation.


Each Edwards cart comprises an EXTTM molecular vacuum pump, an XDSTM


225H compound 10 dry scroll pump


used as the backing pump, and a combination of active Pirani vacuum, active inverted magnetron and active wide range gauges.


These are enclosed in a cart designed to meet the specific size and orientation requirements of the Diamond beamlines and which can be wheeled around the beamlines or to other locations as required. Edwards has also supplied conversion kits to enable vacuum carts it had previously supplied to Diamond to be upgraded to the new design.


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