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Concentrators (aka nitrogen evaporators or nitrogen blowdown concentrators) are a valid alternative to rotary evaporation mainly in case of small volumes (under 50 mL) and a large quantity of samples.

Concentrators accelerate the evaporation by decreasing the partial vapor pressure of the solvent just above the surface of the liquid. Blowdown evaporators use a jet of gas to continually force off the layer of air that is saturated with vapor. By immediately removing molecules that enter the vapor state, the molecules do not have a chance to return to the liquid, which increases the evaporation rate. As said blowdown technique is very useful for small sample volumes because with larger samples nitrogen blowdown will take longer and semi-volatile compounds may be lost. Since the samples are immersed in a water bath, with programmable temperatures up to 100°C, the evaporation is further accelerated. LabTech offers 4 models, 3 of them automated and one manual, hosting different tube sizes to satisfy multiple needs.

Key Features

  • Advanced solutions and features
  • Automatic adjustment of nitrogen needle according to the sample volume reduction
  • Visible concentration process
  • Vortex nitrogen purge
  • Sample cups do not need to be handled
  • Automatic detection of the liquid endpoint
  • 10, 50 & 200 mL concentration cups can be accommodated
  • Cups can go directly to the liquid handler of GPC/SPE
  • Excellent price/performance ratio

Available Products

See the LabTech MultiVap 54 in action

LabTech SrlLabTech is a leading manufacturing company with skill and passion devoted to provide advanced laboratory solutions to the analytical community. Major LabTech products include organic/inorganic sample preparation systems, laboratory cooling/heating/temperature control equipments, analytical instruments, gas generators, laboratory centrifuges and liquid nitrogen generators. With knowledgeable scientists and experienced engineers, our R&D team has developed and released a series of new equipments and instruments dedicated to the modern analytical laboratories.