NITROGEN EVAPORATORS (Sample Concentrators)

A nitrogen evaporator (also known as "nitrogen sample concentrator" or "nitrogen gas blowdown concentrator") is a device that is typically used to concentrate samples before analysis or before a solvent exchange. Nitrogen blowdown concentrators accelerate evaporation by decreasing the partial vapor pressure of the solvent just above the surface of the liquid. Nitrogen evaporators work by blowing nitrogen in the surface of the sample which is being heated to accelerate evaporating and separating the solvent in the sample without oxygen. Nitrogen blowdown is very useful for small sample volumes (under 50 mL), because with larger samples nitrogen blowdown will take longer and, as a result, semivolatile compounds may be lost.

Instead of the rotary evaporation instrument, the nitrogen sample concentrator can efficiently concentrate dozens of samples simultaneously. However, there are variations among nitrogen evaporators, including how many sample positions it contains, whether it uses wet or dry baths, if it needs hood space or not, and whether it provides heat as well as nitrogen blowdown to evaporate the samples.

Nitrogen evaporators dry and concentrate samples so that tests like drug screening, hormone analysis, mass spectrometry, gas chromatography, and high performance liquid chromatography (HPLC) can be performed on them. In this regard, nitrogen evaporators are used in many industries, such as food, biotechnology, analytical chemistry, petroleum, and environmental sciences.

RotaLab provides a wide range of nitrogen evaporators for research and industrial applications.