Preparative Fraction Collector - PFC - Specifications

Significance of the Topic

Preparative fraction collection following capillary GC is critical for isolating pure compounds for advanced analyses such as NMR or FTIR. Automated systems capable of recovering ultra-trace components over extended sequences enhance laboratory efficiency and sample throughput.

Objectives and Study Overview

This document describes the GERSTEL Preparative Fraction Collector (PFC), highlighting its ability to collect and concentrate up to six user-defined fractions plus residual sample automatically and its seamless integration with standard GC platforms and detectors.

Methodology and Instrumentation

• The PFC connects to capillary GC with a built-in flow-splitter for simultaneous peak monitoring.
• Seven traps (six preparative and one zero trap) feature independent heating (up to 250 °C) and cooling (down to –150 °C using LN₂ or closed-circuit systems).
• Transfer lines (rigid or flexible) operate up to 400 °C and can be mounted on either side, accommodating various oven configurations and distances.
• Control is managed by the GERSTEL Controller C506 with MAESTRO software, usable in standalone mode or integrated into Agilent® and Thermo Scientific® chromatography data systems.
• The system supports parallel operation with common detectors (MS, FID) and optional modules such as the GERSTEL Cryo Trap System CTS 1 or Olfactory Detector Port ODP.

Key Results and Discussion

• Valve-free flow design minimizes dead volumes and maximizes analyte recovery.
• Microprocessor-driven control enables unattended operation across dozens to hundreds of GC runs.
• Precise thermal management ensures high-purity fraction collection (≥95%) with resolution down to 0.01 min.
• Stable performance under varied conditions (15–35 °C, up to 60 % RH, altitudes up to 4615 m) demonstrates robustness.

Benefits and Practical Applications

• Supports preparative-scale fraction collection for structural elucidation and purity verification in research and QA/QC laboratories.
• Enhances existing GC systems without extensive modifications.
• Facilitates trace-level isolation in environmental, metabolomics, flavor & fragrance, and pharmaceutical analyses.

Future Trends and Opportunities

Future developments may include larger trap volumes, integrated real-time analytical feedback, and advanced temperature control for thermolabile analytes. Custom configurations will address specialized requirements in pharmaceutical, environmental, and food safety applications.

Conclusion

The GERSTEL PFC offers a flexible, automated solution for high-purity fraction collection post-GC. Its modular design, precise thermal control, and compatibility with standard chromatographic systems make it a valuable tool for preparative separations and downstream analyses.

Used Instrumentation

• GERSTEL Preparative Fraction Collector (PFC) with heating and cooling options
• GERSTEL Controller C506 and MAESTRO software
• Capillary gas chromatograph with conventional detectors (e.g., MS, FID)
• Optional GERSTEL Cryo Trap System CTS 1 or Olfactory Detector Port ODP

References

No external references cited; information based on manufacturerʼs product specifications.