ANALYTICAL AND LABORATORY EQUIPMENT 19


Diaphragm vacuum pumps for laboratory and mini-plant areas


The new eight-cylinder diaphragm vacuum pumps from Vacuubrand offer 30 to 60 per cent more pumping speed than the predecessor series and are thus by far the most powerful diaphragm pumps of this manufacturer. With capacities ranging up to nearly 20m3


/h and


ultimate vacuums between 70mbar and 0.3mbar depending on the version, a broad spectrum of


requirements are covered. They can be used as a replacement for oil-sealed


rotary vane pumps and water ring pumps for example for load lock applications and vacuum network supplies or in kilolab and mini-plant areas. From the intake to the outlet of the chemistry


pump models all wetted components are made of highly resistant plastics and perfluoro elastomers and are thus highly resistant to aggressive chemicals. This allows operation without any cold trap, and thus reduces the total cost of ownership. Also regular oil changes, required with rotary vane pumps, or the high water consumption and complex maintenance of water ring pumps are eliminated. The ultimate vacuum in particular with gas ballast is significantly improved compared to the previous models. The new eight-cylinder pumps are a very environmentally friendly and economical alternative to conventional vacuum pumps. The pumping units are ideal for harsh


Density kit and ` analytical balance


Scientists know that accurately determining the density of a substance is critical in the research process. Pairing a density kit with an analytical balance helps them reliably and precisely find a material’s density. Traditionally, density determination required


measuring the sample material: figuring out the volume, weighing the sample, dividing volume by mass, and finally coming up with the density. The process is complicated, tedious and even inaccurate. Testing of solids and liquids is possible using the


density kit, which is installed on the balance’s weighing chamber floor. The kit’s beaker holds the reference liquid and may be


reused to test many samples. The user selects the density application from the built-in menu options. If a reference liquid is used other than what is already programmed into the balance, the user enters that reference liquid’s density. The application guides the user through the process: weigh the sample in air using the sample cup on top of the stand, then in the reference liquid using the sample cup suspended on the wire.


Enter 19B or ✔ at www.scientistlive.com/eurolab


Adam Equipment is based in Bletchley, Milton Keynes, UK. www.adamequipment.com


Gilson’s automated solid phase extraction (SPE) instrumentation provides a wide range of throughput solutions - from smaller sample processing (one sample at a time) to higher sample throughput (up to eight samples at a time). The SPE solutions automate and optimise


recovery and precision, ensuring accurate and precise sample preparation results. The full range of column dimensions is


accommodated within the layout of the instruments. Features include:


operating conditions due to the separator at the inlet and provide an efficient solvent recovery due to emission condenser. The VARIO versions are operating up to 40 per cent


more energy-efficient than the predecessor models. In practical use up to 90 per cent of the energy


needed for a process can be saved by the automatic, on-demand Vacuubrand VARIO - speed control in comparison to permanently running pumps. In most applications the average motor speed


is much reduced causing the already very long service interval of Vacuubrand diaphragm pumps to be extended even further. The new eight-cylinder diaphragm pumps provide a trendsetting, clean and environmentally friendly alternative to conventional vacuum technologies.


Enter 19 or ✔ at www.scientistlive.com/eurolab


Vacuubrand GmbH + Co KG is based in Wertheim, Germany. www.vacuubrand.co


Automate solid phase extraction


● Advanced mobile rack design.


● Easy to use Software interface.


● Automated HPLC injection capability.


● Large Cartridge capacity on a small footprint device.


● Positive pressure technology.


● Pressure sensing valve. ● 1ml, 3ml and 6ml cartridges.


● Large volume option. The new GX Solvent Evaporation Station is


designed for easy integration in automated liquid- handling systems. A Gilson SPE booklet is also available which


covers its range of automated liquid handlers, selective SPE columns and application notes.


Enter 19A or ✔ at www.scientistlive.com/eurolab


Gilson International BV Deutschland is based in Limburg-Offheim, Germany. www.gilson.com


www.scientistlive.com


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