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LCTECH / GPC PRODUCT LINEUtilizing the easy-to-use Vario PC software or the keypad,the system can customize evaporation proles for eachindividual sample and be setup for unattended operationovernight or through weekends. Matched with several autosamplerrack congurations, the EVA offers the exibilityand precision required in today’s busy laboratories.FEATURE HIGHLIGHTS• Reliable – Durable – Quiet• Sample Carry-Over Eliminated• Unattended Operation• Custom Evaporation ProfileEVAAUTOMATED EVAPORATOR FOR SERIAL CONCENTRATORSAt the heart of the EVA is a uniquely designed evaporationchamber that uses laser controls for accuracy and reproducibility.Utilizing the best features of rotary vacuum evaporationdesign, this chamber has been optimized for nalvolume accuracy and variable evaporation speeds.The rotary evaporator design uses centrifugal force andfrictional force between the wall of the rotating ask and theliquid sample to form a thin lm of warm solvent spreadover a large surface area. The forces created by the rotationsuppress violent, unpredicted boiling or bumping. Therotational design combines a silicon oil bath for consistentheat transfer with a laser-directed volume control to allowfor precision in either fast or gentle evaporation of solvents.The shape of the evaporation chamber has a unique, wideupper chamber and a narrow, tube-shape lower chamber.The width of the upper chamber allows solvent tospread around the walls, which optimizes heat transfer andmaximizes surface area for evaporation. The narrow lowerchamber acts as a collection tube and enables very accurate,level measurements with a laser at the end stages ofevaporation.POPULAR APPLICATIONS INCLUDE• Pesticides and Polychlorinated Biphenyls (PCB)– EN 1528, EPA 8082a• Pesticide Residues – EN 12393• Polycyclic Aromatic Hydrocarbon (PAH) – EPA 8310• Organochlorine Pesticide Residues – AOAC 984.21• Phthalates – EPA 8270c• …And Many More, Including USGS And USDA MethodsSYSTEM FEATURES• FLEXIBILITY IN PROCESSINGThe software allows 98 custom evaporation profiles to optimizefor each sample’s matrix requirements. Evaporation rate andrinsing cycle are variable, facilitating the alleviation of carry-over.Keypad or Vario Soft PC software controlled.• HIGH EVAPORATION EFFICIENCYEvaporation efficiency is determined by vacuum and heating.Vacuum is provided by a membrane pump with frequency controlfor virtually silent operation. Heating is accomplished by a closedsilicon oil bath for consistent and reproducible heating. Temperaturerange and precision from ambient to 70 °C +/- 1 °Cwith maximum evaporation rate of 10 mL/min.• DEFINED END VOLUMEFinal volumes of 1 mL or 2 mL/5 mL are possible withexcellent reproducibility.• SOLVENT EXCHANGEWhen solvent exchange is required, the EVA is capable of evaporatingto dryness and subsequently dissolving with a different solvent.Solvent exchange with vacuum control is also a possibility• HIGH RECOVERY RATES AND EXCELLENTREPRODUCIBILITYAutomation of the evaporation processes guarantees excellentreproducibility and high recovery rates.