LabTech PrepElite-GV Automated Sample Preparation Platform

Overview

The LabTech PrepElite-GV Automated Sample Preparation Platform is an integrated, fully automated system engineered for high-throughput, reproducible sample cleanup and concentration in analytical laboratories. It implements a modular architecture combining gel permeation chromatography (GPC), solid-phase extraction (SPE), and dual-mode vacuum concentration — each module operable independently or seamlessly coupled for end-to-end workflow automation. The system is purpose-built for complex matrices commonly encountered in food safety, environmental monitoring, agricultural residue analysis, and life sciences applications — including lipid-rich, fatty, or highly pigmented samples where matrix interference compromises downstream GC or LC-MS analysis. By removing macromolecular interferences (e.g., triglycerides, proteins, polymers) and concentrating target analytes prior to instrumental analysis, the PrepElite-GV significantly enhances method sensitivity, improves signal-to-noise ratios, reduces instrument downtime, and extends HPLC/GC column lifetime through effective particulate and contaminant removal.

Key Features

• Fully automated multi-step workflows: GPC purification → SPE fractionation → dual-vacuum concentration → direct vial collection
• Modular design enables flexible configuration: GPC, SPE, and concentrator modules can be deployed individually or in any combination
• Dual-concentrator architecture with two independent evaporation cups — enables parallel processing and reduces total cycle time by up to 40% versus single-cup systems
• Intelligent flow control system with real-time pressure and flow feedback, maintaining ±1.5% accuracy across the full 0.1–100 mL/min range
• GPC module equipped with dual-piston precision solvent delivery pump and variable-wavelength UV detector (200–400 nm) for real-time fraction monitoring
• Chemically inert fluid path: all solvent-contact surfaces constructed from PTFE, PEEK, and 316L stainless steel to ensure compatibility with aggressive organic solvents and long-term system integrity
• Integrated solvent vapor condensation and recovery system — minimizes volatile organic compound (VOC) emissions and supports laboratory sustainability goals

Sample Compatibility & Compliance

The PrepElite-GV accommodates diverse sample types, including homogenized food tissues, soil extracts, wastewater supernatants, plasma/serum, and lipid-extracted plant materials. Its robust SPE manifold supports standard 1 mL, 3 mL, and 6 mL cartridges as well as disk-based formats. The GPC column (typically 25 × 300 mm, Bio-Beads SX-3 or equivalent) is validated for molecular weight cutoffs between 500–10,000 Da, enabling selective removal of fats, waxes, and humic substances. The platform complies with key regulatory frameworks governing analytical method validation and data integrity: it supports audit-trail-enabled operation aligned with FDA 21 CFR Part 11 requirements when used with optional electronic signature and user access control modules. Method parameters and run logs are timestamped and exportable in CSV or XML format for GLP/GMP documentation. All GPC and SPE methods may be developed and validated per ISO 17025, AOAC Official Methods®, and EPA Method 3640A guidelines.

Software & Data Management

The PrepElite-GV operates via LabTech’s proprietary PrepControl™ software — a Windows-based application supporting both English and Chinese UI localization. The interface provides drag-and-drop method building, real-time system status visualization (pressure, temperature, flow, valve position), and stepwise protocol validation. All method files include embedded metadata (user ID, timestamp, instrument serial number) and support version control. Raw data (UV chromatograms, flow profiles, concentration curves) are stored in vendor-neutral formats and can be imported into third-party chromatography data systems (CDS) such as Thermo Chromeleon, Agilent OpenLab, or Waters Empower. Audit trails record every parameter change, start/stop event, and user login — retained for ≥18 months and exportable for internal QA review or external inspection.

Applications

• Multi-residue pesticide analysis in fruits, vegetables, and cereals (e.g., following QuEChERS-GPC-SPE workflows)
• PCB, PAH, and dioxin quantification in sediment, fish tissue, and edible oils
• Pharmaceutical impurity profiling in biological matrices requiring extensive lipid removal
• Endocrine-disrupting compound screening in wastewater and surface water
• Myco-toxin enrichment and cleanup from grain and feed samples prior to LC-MS/MS
• Standardized sample prep for accredited testing laboratories seeking ISO/IEC 17025 compliance

FAQ

Can the PrepElite-GV be integrated directly with GC or LC autosamplers?
Yes — the final concentrated eluate is dispensed directly into standard 2-mL GC/LC vials with programmable positioning; optional robotic arm integration is available for unattended transfer to select autosampler trays.
Is method transfer from manual GPC or SPE protocols supported?
Absolutely — the software includes a method migration wizard that converts legacy SOPs into executable sequences, including gradient timing, valve switching logic, and fraction collection rules.
What maintenance intervals are recommended for the GPC pump and concentrator?
The dual-piston GPC pump requires seal inspection every 6 months under continuous use; the concentrator’s heating block and vacuum pump oil should be serviced quarterly per manufacturer specifications.
Does the system support method validation documentation packages?
Yes — PrepControl™ generates IQ/OQ documentation templates compliant with ISO/IEC 17025 and includes built-in performance verification tests (e.g., flow accuracy, temperature uniformity, fraction recovery) with pass/fail reporting.
Are consumables such as GPC columns and SPE cartridges supplied by LabTech or third parties?
LabTech offers certified GPC columns and SPE cartridges optimized for the PrepElite-GV; however, the system accepts industry-standard dimensions and is compatible with major OEM and generic brands meeting dimensional and chemical resistance specifications.