SFT SFT-150 Supercritical Fluid Extraction and Reaction System

Overview

The SFT SFT-150 Supercritical Fluid Extraction and Reaction System is a modular, semi-automated laboratory-scale platform engineered for rigorous research and process development in supercritical fluid (SCF) science. It operates on the fundamental principle of exploiting tunable solvent properties—density, diffusivity, and solvation power—of fluids above their critical point (e.g., CO₂ at ≥31.1 °C and ≥1070 psi). The system enables precise control over pressure (up to 10,000 psi / 68.9 MPa) and temperature (up to 350 °C), allowing users to systematically investigate extraction kinetics, reaction equilibria, fractionation selectivity, and impurity removal across diverse matrices. Unlike fully automated high-throughput systems requiring extensive capital investment, the SFT-150 delivers industrial-grade operational safety, repeatability, and scalability within a cost-optimized architecture—making it suitable for academic labs, pharmaceutical QC/QA departments, natural product laboratories, and early-stage process engineering teams.

Key Features

• Modular extractor vessel design supporting volumes from 50 mL to 4000 mL—interchangeable without system revalidation;
• Electrically heated jacketed vessels (2 kW each) with ±1 °C temperature stability and LED digital readout;
• High-pressure instrumentation calibrated to ±1 psi accuracy, including pressure transducers and thermocouple-based fluid temperature monitoring;
• Heated back-pressure regulator (up to 250 °C) ensuring stable phase behavior during depressurization and collection;
• Integrated fluid preheater (standard for vessels ≥500 mL) to minimize thermal gradients and ensure homogeneous supercritical conditions;
• Optional co-solvent (e.g., ethanol, methanol) delivery module—available in manual syringe or precision metering pump configurations;
• Stirring assembly compatibility for heterogeneous reactions or viscous matrix extraction (e.g., algal biomass, spent coffee grounds);
• Rupture disc safety system specifically rated for liquid CO₂ overpressure scenarios;
• Expandable multi-channel configuration for parallel batch testing or sequential fractionation workflows;
• Field-upgradable architecture—supports seamless integration of SFT-250-level enhancements (e.g., PLC-based automation, data logging compliance modules).

Sample Compatibility & Compliance

The SFT-150 accommodates solid, semi-solid, and powdered samples—including botanicals (e.g., hemp, hops, rosemary), pharmaceutical intermediates, nutraceuticals, polymer precursors, and catalyst-coated substrates. Its stainless-steel construction (316 SS contact surfaces), inert flow path, and validated pressure containment meet ASME BPVC Section VIII Division 1 requirements. While not certified as GMP-compliant out-of-the-box, the system supports GLP-aligned operation when configured with audit-trail-capable data acquisition (via optional third-party DAQ hardware and compliant software). It aligns with ASTM D7675 (Standard Practice for Supercritical Fluid Extraction of Polycyclic Aromatic Hydrocarbons from Soil) and ISO 14852 (Determination of ultimate aerobic biodegradability in aqueous medium), serving as a foundational tool for method development under USP <1225>, ICH Q5C, and FDA 21 CFR Part 11–ready environments when paired with validated software layers.

Software & Data Management

The base SFT-150 operates via front-panel digital controls with real-time LED displays for pressure, temperature, and flow rate—enabling manual protocol execution with traceable setpoint logging. For enhanced data integrity, optional analog/digital I/O interfaces allow connection to industry-standard SCADA or LabVIEW-based acquisition systems. When integrated with compliant software (e.g., NI DIAdem, MATLAB Production Server), the system supports electronic signatures, user access control, change history tracking, and PDF report generation—meeting core elements of 21 CFR Part 11 for regulated environments. All sensor outputs are timestamped and scalable to CSV/Excel export for statistical analysis (ANOVA, DoE modeling) in JMP or Minitab.

Applications

• Decaffeination and essential oil isolation from plant biomass;
• Residual solvent removal from APIs and excipients post-synthesis;
• Supercritical anti-solvent (SAS) and rapid expansion of supercritical solutions (RESS) for nanoparticle formulation;
• Catalytic hydrogenation, oxidation, and transesterification under SCF-CO₂ media;
• Extraction of lipids, carotenoids, and polyphenols with minimal thermal degradation;
• Method development for regulatory submissions (e.g., EMA CHMP opinions, FDA IND-enabling studies);
• Process parameter mapping for scale-up to pilot (SFT-250) or production-scale systems.

FAQ

What is the maximum allowable operating pressure, and how is overpressure protection implemented?
The SFT-150 is rated for continuous operation up to 10,000 psi (68.9 MPa). A certified rupture disc—specifically selected for liquid CO₂ service—is installed upstream of the main pressure control valve to provide fail-safe overpressure relief.
Can the system handle corrosive co-solvents such as formic acid or HCl-doped methanol?
Standard wetted materials (316 stainless steel, Kalrez® seals) are compatible with common polar co-solvents (ethanol, acetone, water). For highly corrosive additives, custom Hastelloy C-276 vessels and fluorosilicone-free sealing options are available upon request.
Is remote monitoring or Ethernet connectivity supported natively?
No native Ethernet interface is included in the base configuration. However, analog 4–20 mA and 0–10 V outputs are provided for pressure, temperature, and flow signals—enabling integration into existing facility-wide control networks via third-party gateways.
How does the system ensure temperature uniformity across large-volume extractors (e.g., 4 L)?
Each vessel employs circumferential electric heating tape with independent PID control. The integrated fluid preheater ensures inlet stream temperature matches setpoint before entering the vessel, minimizing axial thermal lag and improving reproducibility in kinetic studies.
What documentation is supplied for IQ/OQ validation support?
SFT provides a comprehensive Factory Acceptance Test (FAT) report, material certifications (MTRs) for all pressure-retaining components, calibration certificates for primary sensors, and a User Requirements Specification (URS) template to guide site-specific Installation Qualification (IQ) and Operational Qualification (OQ) protocols.