GERSTEL Multi-Position Evaporation Station mVAP

Significance of the topic

Automating solvent evaporation within sample preparation workflows addresses key challenges in analytical chemistry, including lowering detection limits, improving reproducibility, and minimizing manual handling risks. The integration of controlled temperature, vacuum, and agitation enables reliable concentration and solvent exchange, which are essential for high-performance GC/MS and LC/MS analyses.

Objectives and overview of the study

This application note presents the GERSTEL Multi-Position Evaporation Station (mVAP) as an add-on module for the MultiPurpose Sampler (MPS). The primary goals are to demonstrate simultaneous evaporation of up to six samples, seamless integration with a variety of sample preparation techniques, and direct interfacing to chromatographic and mass spectrometric systems via MAESTRO software.

Methodology and instrumentation

The mVAP performs batch evaporation under user-defined temperature, vacuum, and agitation settings to concentrate extracts or perform solvent exchanges. Evaporation runs in parallel for six standard autosampler vials (2, 4 or 10 mL), reducing analyte loss and avoiding condensation. Sample pre-treatment techniques such as SPE, dispersive SPE (DPX), liquid–liquid extraction, membrane-assisted extraction, centrifugation, and filtration can be combined in a single workflow.

Instrumentation Used

• GERSTEL MultiPurpose Sampler (MPS) with mVAP evaporation station option
• MAESTRO PrepBuilder and Scheduler software for method development and sequence control
• GC/MS or LC/MS systems for automated sample analysis

Main results and discussion

Tests showed that the mVAP delivers reproducible concentration of up to six samples with minimal analyte loss. Controlled evaporation improved limits of detection and enabled solvent exchange tailored for optimal chromatographic performance and ionization efficiency. Parallel processing and PrepAhead scheduling reduced overall cycle time and maximized instrument utilization.

Benefits and practical applications of the method

• Enhanced sensitivity thanks to efficient sample concentration
• Automated solvent exchange streamlining GC/MS and LC/MS workflows
• Reduced manual transfers and operator exposure to solvents
• Sealed-vial operation ensures contamination-free processing
• Single-method control via MAESTRO simplifies method transfer and validation

Future trends and possibilities for application

Ongoing developments may focus on deeper integration with robotic arms and online monitoring of evaporation progress. Miniaturized modules for smaller sample volumes, advanced vacuum technologies for faster processing, and expanded compatibility with new sample preparation cartridges could further enhance throughput in environmental, pharmaceutical, food safety, and clinical laboratories.

Conclusion

The GERSTEL mVAP module offers a fully automated, flexible, and reproducible solution for solvent evaporation and exchange. Its seamless integration with sample preparation techniques and chromatographic analysis via MAESTRO software maximizes laboratory efficiency while ensuring high-quality analytical results.

References

No external references were cited in the source document.