A Rapid Safe Technique for Drying DNA and Oligonucleotide Samples from Genevac

27 Jan 2014
Sarah Thomas
Associate Editor

A technical article is available from Genevac that describes a rapid, safe technique for drying oligonucleotide and DNA samples.

DNA and oligonucleotide samples are sensitive and care needs to be exercised during concentration. Research done at the Welcome Trust Centre for Human Genetics (UK) shows that the Genevac EZ-2 evaporator is an ideal tool for concentrating SNP and oligonucleotides in microplates when preparing samples for microarraying and for Sequenon analysis. Compared to traditional methods, using the EZ-2 evaporator is shown to significantly speed up concentration rates, eliminate potential sources of damage to samples and also improve final sample quality. To download a full copy of this article please click on the company website link below.


Using the most advanced technology in evaporation science, the Genevac EZ-2 Series has proven itself as a popular centrifugal evaporator for QA and research labs worldwide, be that for concentration of samples or complete drying.

The innovative design of the EZ-2 presents real advantages for all chemists faced with removing both regular solvents and volatile chemicals. Intuitive controls and large LCD display provide ease of use comparable to a typical rotary evaporator yet the EZ-2 can process many more samples per unit time. Smart evaporator software provides true walk-away automation so simple and sample safe that anyone can use it with confidence. The proprietary pump technology combined with a visible glass condenser trap and easy access solvent drain valve make the EZ-2 the most compact, reliable and productive benchtop sample evaporator available.

EZ-2 Series

Genevac

Using the most advanced proven technology in evaporation science, the third generation of the EZ-2 Series has been designed specifically for solvent removal in life science research; be that concentration of samples or complete drying.  The innovative design of the EZ-2 Series presents many advantages for working in parallel within synthesis chemistry, analytical sample preparation and for general-purpose solvent removal needs in life science laboratories. At the heart of the evaporator is a solvent resistant, oil-free vacuum pump, and the high efficiency, defrost-free, SpeedTrap™, which traps all solvents as liquids, even water. Solvents collect in the insulated, plastic coated glass vessel, enabling the user to see the progress of evaporation and determine when the trap should be emptied. The EZ-2 Elite has a special auto-draining collection vessel fitted to the SpeedTrap, which uses the very powerful Scroll pump. The Elite can therefore evaporate the highest boiling solvents such as DMSO and perform the Genevac LyoSpeed fast lyophilisation method for HPLC fractions. There is a low-cost option available on the Standard, Plus and Elite that allows the routine use of hydrochloric acid and aggressive solvents. By building key elements in Hastelloy®, glass or PTFE, full protection against acid chlorides is achieved. New to the HCl Resistance option is the ability to evaporate concentrated nitric acid. This option must be specified when ordering, as it cannot be retrofitted. All EZ-2 models are resistant to routine use of high concentrations of TFA as standard. An additional option is available to allow safe operation for those wishing to use highly explosive solvents, such as pentane or diethyl ether - the inert gas purge system. This system can also be used to preserve oxygen or moisture sensitive samples under an inert gas blanket until the user returns to the evaporator. The EZ-2 Series can also accommodate a wide selection of sample holders, including round-bottom flasks up to 500ml, tubes up to 160mm long (including Dionex ASE® and Radleys Carousel tubes), custom reaction blocks, and shallow or deep-well microtitre plates. EZ-2 Series Models: The Standard (EZ-2) is suitable for water and volatile solvents The Envi (EZ-2 Envi) is recommended for concentration of volatile solvents The Plus (EZ-2 Plus) is recommended for solvents with boiling points upto 165°C The Elite (EZ-2 Elite) is recommended for solvents with boiling points upto 220°C

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