LCTech FREESTYLE GPC SPE EVA Fully Automated Online Integrated Sample Preparation Platform

Overview

The LCTech FREESTYLE GPC SPE EVA is a modular, fully automated online integrated sample preparation platform engineered for high-reproducibility, trace-level organic analysis in regulated and research laboratories. It combines three orthogonal sample cleanup and concentration techniques—Gel Permeation Chromatography (GPC), Solid Phase Extraction (SPE), and Evaporative Volume Adjustment (EVA)—within a single, programmable fluidic architecture. Unlike conventional offline or semi-automated workflows, the FREESTYLE GPC SPE EVA enables true end-to-end automation from crude extract injection through fraction collection, solvent exchange, and precise volume adjustment—without manual intervention or intermediate vial transfers. Its core measurement principle relies on size-exclusion separation (GPC), selective adsorption/desorption kinetics (SPE), and controlled nitrogen-assisted evaporation under inert atmosphere (EVA), all governed by deterministic pump sequencing, pressure-regulated flow control, and real-time solvent level sensing. Designed for compatibility with LC–MS, GC–MS, and HPLC systems, it supports direct online coupling via standardized interfaces (e.g., 1/16″ PEEK tubing, valve-driven fraction routing), minimizing analyte loss, degradation, and carryover.

Key Features

• Modular architecture supporting independent or sequential operation of GPC, SPE, and EVA modules—each configurable via intuitive touchscreen interface and validated method templates.
• GPC module equipped with certified, USP/ISO-compliant gel filtration columns (e.g., Bio-Beads SX-3, PLgel MIXED-D) for effective removal of macromolecular interferences (lipids, proteins, polymers) from complex matrices.
• SPE module featuring proprietary low-dead-volume column sealing pistons that ensure consistent bed compression, uniform flow distribution, and reduced wall adhesion—critical for viscous extracts (e.g., fish oil, honey, sediment slurries).
• EVA module delivering precise, gravimetrically monitored concentration and reconstitution to user-defined final volumes (±10 µL accuracy at 1 mL), with programmable temperature ramping and solvent vapor pressure compensation.
• Integrated solvent management system supporting up to six eluents with automatic purge-and-prime cycles, leak detection, and pressure monitoring across all fluid paths.
• Robust wetted-path construction using 316 stainless steel, PTFE, and borosilicate glass—ensuring chemical compatibility with aggressive solvents (e.g., DCM, acetone, THF) and long-term stability under repeated thermal cycling.

Sample Compatibility & Compliance

The platform accommodates diverse sample types—including aqueous extracts, organic solvent homogenates, lipid-rich tissue digests, and suspended particulates—with validated performance across AOAC, EPA, EN, and ISO standard methods (e.g., EPA Method 1694, ISO 17251:2020, EN 15662:2018). It meets GLP/GMP documentation requirements through audit-trail-enabled software (see Software section) and supports 21 CFR Part 11 compliance when deployed with electronic signatures and role-based access control. All consumables—including GPC columns, SPE cartridges (C18, Florisil, PSA, NH₂), and EVA vials—are traceably sourced and certified for low blank levels (<0.1 pg PCB congener, <0.5 ng aflatoxin B1).

Software & Data Management

Control and data acquisition are managed via LCTech’s FREESTYLE Control Suite v5.x—a Windows-based application compliant with IEC 62304 Class B medical device software standards. The suite provides method editor with drag-and-drop workflow builder, real-time chromatogram preview (for GPC UV detection), event logging with timestamped operator actions, and export to CSV, PDF, and XML formats. Audit trails record all parameter changes, run completions, error events, and maintenance alerts—retained for ≥36 months. Raw data files are stored with SHA-256 checksums; optional integration with LIMS via ASTM E1482 or HL7 interfaces is available.

Applications

• Environmental analysis: Cleanup of soil, sediment, wastewater, and air particulate extracts prior to quantification of PAHs, PCBs, organochlorine pesticides, and brominated flame retardants per EPA SW-846 Methods 3620C and 3630C.
• Food & agricultural testing: Multi-residue analysis of fruits, vegetables, cereals, and animal tissues for mycotoxins (aflatoxins, ochratoxin A), veterinary drugs (tetracyclines, sulfonamides), and pesticide metabolites per EU SANTE/11312/2021 guidelines.
• Clinical & forensic toxicology: High-throughput purification of urine and plasma samples for doping control (WADA Code Annexes), therapeutic drug monitoring, and postmortem toxicology screening.
• Natural product research: Fractionation of botanical extracts and traditional medicine preparations to isolate bioactive compounds while removing chlorophyll, tannins, and polysaccharides.

FAQ

Can the FREESTYLE GPC SPE EVA be retrofitted with additional modules after initial installation?
Yes—hardware expansion (e.g., adding a second SPE manifold or GPC column oven) is supported via field-upgradable firmware and mechanical mounting kits, subject to electrical and footprint constraints.
What validation documentation is provided with the system?
Each unit ships with Factory Acceptance Test (FAT) report, IQ/OQ protocols aligned with ASTM D7217 and ISO/IEC 17025, and a Certificate of Conformance listing material certifications and calibration records.
Is remote diagnostics and software update capability available?
Yes—the system includes secure TLS 1.2-enabled remote support port, allowing authorized LCTech engineers to perform health checks, log analysis, and version-controlled firmware updates without local IT intervention.
How does the platform handle matrix-induced pressure fluctuations during GPC runs?
It employs adaptive backpressure regulation via servo-controlled restrictor valves and real-time viscosity compensation algorithms, maintaining ±2% flow stability even with 30% variation in sample matrix viscosity.
Are third-party SPE cartridges compatible with the SPE module?
Yes—standard 1 mL, 3 mL, and 6 mL format cartridges from major suppliers (e.g., Waters, Agilent, Thermo Fisher) are mechanically and pneumatically interoperable; column seal geometry is adjustable via motorized actuator.