ROT-X-TRACT-LC Liquid/Liquid Extraction System Model 13318 Instruction Manual

Significance of the Topic

The ROT-X-TRACT-LC provides a unified solution for high-throughput liquid/liquid extraction and rapid solvent evaporation under controlled and reproducible conditions. It addresses a critical need in environmental, pharmaceutical, food and industrial testing laboratories where sample preparation represents a major portion of total analysis time. By combining accelerated one-step extraction and efficient solvent recovery, it reduces analytical turnaround, minimizes solvent use and limits operator exposure to hazardous vapors.

Objectives and System Overview

This manual describes the Model 13318 system designed to:

• Perform simultaneous extraction of up to eight samples with Corning one-step glassware.
• Concentrate extracts rapidly via rotary evaporation and recover >90 % of solvent volume under optimal conditions.
• Offer precise temperature and process control through a digital interface or analog controls.
• Ensure safe operation even with flammable solvents via an optional Type-Z positive-pressure purge bath.

Key components include an 8-position stainless steel heating assembly, rotary water manifold for condensers, digital or analog water bath, extractors and one-step glassware sets, plus optional purge and pressure-reducing regulators.

Methodology and Instrumentation

The core workflow integrates liquid/liquid extraction with accelerated solvent evaporation:

• Samples are loaded into one-step extraction glass assemblies and clamped to the rotating cover disk.
• Heating is provided by a thermostatically controlled stainless steel water bath (up to 100 °C) or oil bath (optional), ensuring uniform heat transfer.
• Cooled tap water or recirculating chiller fluid circulates through individual condensers mounted on a rotary manifold, preventing tubing tangles and ensuring consistent condensation.
• Positive-pressure bath purge (Type-Z option) uses nitrogen or clean air at low overpressure (0.1–0.5" H₂O) to inhibit solvent vapor ingress into the electrical enclosure when evaporating flammables.
• Digital controllers manage bath temperature and timed heating profiles (on-delay/off-delay), while flow meters regulate coolant supply (up to 3.5 LPM at ≤30 PSIG).

Key Features and Performance

• Solvent recovery often exceeds 90 % by volume under ideal conditions.
• Eight-sample parallel processing maximizes throughput and reproducibility.
• Digital interface allows preheating schedules, unattended shut-off and endpoint control.
• Rotary manifold prevents tubing twisting, facilitating front loading and quick position changes.
• Optional pressure-reducing regulator protects condensers when inlet pressures exceed 30 PSIG.
• Integrated safety devices include GFCI protection, high-temperature cutoff switch and sealed electrical enclosures.

Benefits and Practical Applications

• Significant reduction in sample preparation time for environmental water, soil extracts, pesticide residue and pharmaceutical QA/QC methods.
• Minimized solvent consumption and waste through efficient recovery, supporting sustainable laboratory practices.
• Improved analyst safety by reducing vapor release and offering optional inert-gas purging for flammables.
• Consistent, trace-level concentration down to 1–1.5 mL with controlled evaporation and gentle endpoints.
• Compatibility with standard 24/40 and 19/22 glass joints simplifies method adoption and maintenance.

Future Trends and Applications

• Integration with robotic sample-handling platforms and autosamplers for fully automated workflows.
• Embedded sensors for real-time solvent vapor detection and adaptive process control via IoT connectivity.
• Use of green solvents and microscale extraction techniques to further reduce environmental footprint.
• Inline coupling to chromatographic or spectroscopic detectors for near-real-time analysis and process analytical technology (PAT).
• Miniaturized modular systems enabling field deployable extraction and concentration for on-site environmental monitoring.

Conclusion

The Model 13318 ROT-X-TRACT-LC offers a robust, versatile platform for rapid, reproducible liquid/liquid extraction and solvent evaporation. Its combination of high sample capacity, precise thermal control and optional safety features makes it well suited for modern analytical laboratories seeking efficiency, safety and sustainability in sample preparation.