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. 

 

9 good reasons to choose our Concentrators: 

• Advanced solutions and features

• Enhanced productivity

• Automatic adjustment of nitrogen needle according to the sample volume reduction

• Precision, repeatability and gas saving

• Visible concentration process

• Peace of mind

• Vortex nitrogen purge

• Provides high speed evaporation

• Sample cups do not need to be handled

• Time saving and error proof

• Automatic detection of the liquid endpoint

• Error proof and unattended operations

• 10, 50 & 200 mL concentration cups can be accommodated

• Flexibility and time saving

• Cups can go directly to the liquid handler of GPC/SPE

• Time saving

• Excellent price/performance ratio

• A solution for any budget

 

MultiVap 54

The MultiVap 54 is the latest multi-channel and multifunctional parallel instrument, including all accessories and functions to ensure the highest standard of efficiency, speed, reliability, throughput and safety of any concentration process. Nitrogen sweeping, needle level adjustment and visible concentration process are only few of the advantages offered by the MultiVap 54. 

MultiVap 10

The new LabTech MultiVap 10 automatic parallel system increases the capacity by 25% in comparison to the MultiVap 8 boosting the lab throughput. The price/performance ratio has further increased. With this system it is possible to evaporate to solid state or concentrate into a fixed end-point volume. A compact solution compared to conventional rotary evaporators, with the possibility to be used outside the fume hood.

MultiVap 6

The MultiVap 6 is a basic, cost effective sample preparation instrument featuring 6 independent channels. Without transferring, samples are directly concentrated in the vial thereby reducing the risk of transfer loss, improving recovery and saving precious time. The nitrogen fl ow rate of each channel can be adjusted independently as well as the needles that can be adjusted up and down. The aluminum alloy heating block guarantees temperature uniformity for all samples.