Laboratory Products 39 Synthetic Chemistry Labs Benefit from Waterless Condenser
Asynt reports upon a new scientific evaluation of their Condensyn waterless condenser by the Technological University Dublin (TU Dublin) in the key areas of performance versus Liebig water condensers, water savings potential and flood prevention.
Driven by concern over numerous lab flooding incidents in their synthetic chemistry labs at both undergraduate and postgraduate levels from the use of Liebig water condensers, TU Dublin were drawn to evaluate Condensyn waterless condensers.
For commonly used low-boiling solvents such as acetone and ethanol, the Condensyn was shown to provide superior performance to the water- consuming Liebig condensers.
TU Dublin estimated over the course of an undergraduate laboratory session; a condenser would typically be used for 2 hours. This results in a total water consumption figure of at least 264 L per student pair, with each lab session catering for approximately 10 groups, and using approximately 2,640 L of water with a standard Liebig condenser unit. The report concludes that implementation of Condensyn waterless condensers will save 420,000 L of water in the undergraduate labs per annum, which equates to €970 of savings for TU Dublin, Tallaght Campus. They also predict even greater potential water- savings in the post-graduate research lab where reactions often can be run for many day’s duration.
Dr John Moran, a technical officer at TU Dublin commented: “These waterless Condensyn units will result in significant environmental benefits through reduced water consumption, cost savings from massively reduced water consumption and eliminating potential damage due to water leaks from standard Liebig condensers. By using the Condensyn units in the undergraduate teaching labs, our investment will be recouped in under three years, with water savings alone.”
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Overhead Stirrers Combine Power and Intelligence
Wiggens offers overhead stirrers for stirring and mixing in the lab for both low and high viscosity. Safety, power and intelligence were again at the core of the development of this product range. The design focuses on the most essential aspects that produce overhead stirrers as reliable laboratory companions. The soft start, low speed guarantees a smooth and safe stirring process. Three different models are available in this series: each model has the same performance but with different manipulation experiences. Stable rotary knob and on-touch control can be implemented on different models if required. The stirring speed measures up to a maximum of 2,000 rpm with a torque of up to 70 Ncm. The WB2000-C can also be connected to the computer via a RS-232 cable for remote control and can be used as a stand-alone unit or, for instance, integrated in chemical reaction systems.
In addition, Wiggens have already prepared different packages to simplify customer ordering. This includes overhead stirrers, support stands, and stainless steel or PTFE impellers. For stir bearings, stir shafts and more detail on impeller types offered, please visit the company website.
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ADVERTORIAL Quality Refrigeration Down to the Smallest Detail
The LKv 5710 Mediline laboratory refrigerator from Liebherr is the ideal solution for a small footprint or under-worktop integration. The precise electronic controller enables temperatures to be set accurately. The dynamic cooling system ensures high temperature consistency. Integrated alarm systems guarantee safe storage for up to 583 litres.
The model is equipped with a volt-free contact for alarm forwarding to an external remote warning system, as well as with a serial interface RS 485 which enables central documentation of temperature profiles and alarm events. LTM documentation software is optionally available.
The dynamic cooling system in conjunction with the precise electronic controller ensures maximum temperature stability. All laboratory appliances are designed according to the ISO 60068 -3 standard with regard to optimum temperature consistency.
The electronic controllers are equipped with an additional safety thermostat to prevent temperatures dropping below +2°C and to protect sensitive products in the event of a fault.
The laboratory appliances have an access port (diameter 10 mm) on the rear which allows the temperature sensor to be positioned in the interior.
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Laboratory Freezer Range Keeps Valuable Samples Secure
The LGv 5010 Mediline laboratory freezer from Liebherr provides maximum security to keep your valuable samples secure. All freezers are tested at the state-of-the-art Liebherr development facilities according to procedure EN 60068-3 for measuring temperature stability.
With a temperature range from -9 to -35ºC, the freezer has many features to guarantee the safety of stored products and the temperature stability in the interior. The steel door and integrated lock is exceedingly sturdy and protects the stored products against unauthorised access. The commercial-grade moulded polystyrol inner liner is exceptionally easy to clean and enables optimum hygiene.
The precise electronic controller with digital temperature display allows accurate temperature setting to 1/10°C. An integrated data memory logs the last three temperature alarms and power failures, together with the time, date and duration of the alarm. The respective data can be recalled using the AlarmLog function and read on the display panel.
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