Durable strong acid resistant evaporators
15 Oct 2006Genevac, world leader in solvent removal technologies, offers a wide range of centrifugal evaporation systems designed to provide high reliability, top performance and resistance to the most common solvents and acids used within chemistry laboratories.
For laboratories that commonly use strong acid chlorides (such as Hydrochloric Acid or Thionyl Chloride), unlike other suppliers, Genevac has specifically designed special versions of its most popular systems to provide long-term resistance to these highly corrosive acids. Using a Genevac HCl resistant system enables chemists to evaporate high concentrations of HCl, achieving cleaner synthesis and de-protection than using other acids, such as trifluoroacetic acid.
The HCl versions of the EZ-2, HT-4X and HT-12 evaporators use inert and corrosion proof materials to enable high concentrations of hydrochloric acid and other acid chlorides to be removed without any loss of performance or long-term deterioration in the system. These include a PTFE coated evaporation chamber, an external condenser with 316 Stainless Steel Chambers and all metallic parts coming into contact with removed solvent manufactured from highly durable and acid resistant Hasteloy C2000 alloy. In addition each HCl system is configured with Genevac's high performance scroll pump. The main advantage of this reliable pump technology is that it does not require any pumping fluid or lubricant in order to operate. This makes the EZ-2 HCl, HT-4X HCl and HT-12 HCl systems ideal for use in harsh environments where corrosive or volatile solvents are frequently used.
Genevac HCl resistant systems should be used in conjunction with suitable vapour handling and/or neutralising apparatus.
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EZ-2 Series
GenevacUsing 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