Front view D-EVA Vacuum Concentration with carousel | © LCTech GmbH
Dioxin / PCB, PFAS Analysis

D-EVA: Parallel and Fast Evaporation of Your Samples

The vacuum concentrator D-EVA allows unattended, parallel and rapid concentration of several samples with automatic stop at a defined volume between 30 and 150 µL for the dioxin fraction and approx. 300 µL for the PCB fraction. 

The quantitative transfer into a GC vial is possible without time-consuming rinsing of the sample vessel.

For the EVAporation of PFAS the rotor can be equipped with the required Falcon Tubes™.

Front view D-EVA vacuum concentrator with carousel and cold trap | © LCTech GmbH

A cryotrap, collecting all evaporated solvents at minus 60°C, thus avoiding vapours in the laboratory - easy disposal.

  • Reliably evaporate almost to dryness, to a final volume of 30 to 150 µL for the PCDD/F fraction or 300 to 500 µL for the PCB fraction.
  • Technical design reliably prevents boiling distortion, cross-contamination in the headspace and adsorption of analytes on the glass wall.
  • Supply of thermal energy via infrared lamps, after switching off the lamps no further heating or evaporation takes place.

Simple self-explanatory operation of the device.

  • Concentrate 1 to 23 samples in parallel for the PCB fraction or 1 to 53 samples in parallel for the dioxin fraction.
  • You have the choice between different rotors for your suitable sample vessel.
Biolab technician equips the EVAporation device with a rotor | © LCTech GmbH
D-EVA in the laboratory

The Brilliant Solution for the Concentration of Samples 

When cleaning up PCB and dioxin samples, it is necessary to concentrate the samples to a very low volume for the subsequent analysis. Active evaporation beyond dryness should be urgently avoided to retain the analytes. With the D-EVA vacuum concentrator, LCTech, a specialist in automated sample clean-up, has developed a solution for the fast and parallel concentration of 1 to up to 53 samples.

Detailed view of the D-EVA vacuum concentrator carousel | © LCTech GmbH
D-EVA Carousel

Automatic Stop for Unattended Processing

With the use of a vacuum and light, the system concentrates the samples to a defined volume. A sensor specially developed by LCTech stops the device automatically at a volume between 10 and 150 µL for the dioxin fraction and approx. 300 µL for the PCB fraction. A subsequent transfer into the insert of a GC vial is possible without the time-consuming rinsing of the sample container. The results achieved for each sample are identical, irrespective of the number of samples or their position in the rotor.

Detailed view of rotation in D-EVA vacuum concentrator | © LCTech GmbH
Centrifugation of the samples

Sample Concentration

The technology and design of the system ensure that any further active evaporation after the end of the process and cross-contamination are reliably prevented

The sample is centrifuged at a moderate speed during the concentration process. This creates a centrifugal force that prevents boiling retardation. No cleaning steps are necessary during the process.

Front view cold trap D-EVA vacuum concentrator | © LCTech GmbH

No Solvent Vapours in the Laboratory Thanks to Cryotrap

Alongside easy-to-use software, D-EVA is supplied with a highly efficient cryotrap, which re-condenses and collects the solvent. This means that no vapours occur in the laboratory and the user can dispose of the solvents easily. In addition, D-EVA takes up little space in the laboratory as only one device is needed to process several samples in parallel. Various rotors are available for different containers. 

Front view Carousel D-EVA Vacuum Concentrator PFAS | © LCTech GmbH
D-EVA PFAS Rotor for Falcon Tubes

Evaporation of 55 PFAS with D-EVA

To analyse PFAS, plastic materials are used instead of glass. The standard rotors of the D-EVA allow centrifuge tubes made not only from glass but also from plastic to be used for evaporation. The special sensor of the PFAS version enables the evaporation of up to 23 Falcon tubes.

23 x 40 mL to 500 – 900 µL in under 3 h
or 53 x 10 mL nearly to dryness in 2 h.

Product Videos + webinars


D-EVA Vacuum Concentrator - Parallel and fast concentration of your samples
The system concentrates your samples to a small volume with vacuum and energy supply via light and reliably prevents evaporation with a special LCTech sensor....
D-EVA - Optimized concentration with a special vacuum centrifugation for dioxin EVAporation.

Do you have any further questions?

The LCTech experts are happy to provide you with individual solutions.