MENTS SPE-12F Manual Solid Phase Extraction Manifold

Overview

The MENTS SPE-12F is a manually operated, 12-position solid phase extraction (SPE) manifold engineered for reproducible, low-risk sample preparation in analytical laboratories. It implements vacuum-assisted cartridge-based SPE — a standardized sample cleanup and analyte enrichment technique grounded in selective adsorption/desorption thermodynamics. By leveraging affinity interactions between analytes and stationary-phase sorbents (e.g., C18, silica, ion-exchange resins), the SPE-12F enables efficient removal of matrix interferences from aqueous or diluted biological/ environmental samples prior to downstream analysis by HPLC, GC, LC-MS, or ICP-MS. Its design adheres to core principles outlined in EPA Method 500 series, ISO 17025-compliant sample handling protocols, and USP chromatographic system suitability requirements for preparative steps.

Key Features

• 12 independent PTFE-lined fluid pathways prevent cross-contamination between samples — critical for trace-level analysis and regulatory compliance.
• Vacuum chamber constructed from precision-molded borosilicate glass with uniform wall thickness, rated for sustained operation at ≥80 kPa negative pressure (tested per ASTM E438 Class A specifications).
• Chemically inert wetted components: all solvent-contact surfaces — including column adapters, vacuum lid gaskets, and pressure-regulating valves — are fabricated from high-purity PTFE or PTFE-reinforced polymers, ensuring compatibility with strong acids (e.g., 6 M HCl), bases (e.g., 1 M NaOH), and organic solvents (e.g., acetonitrile, dichloromethane).
• Ergonomic, space-efficient footprint optimized for benchtop use; accommodates standard 10–16 mm OD collection tubes without repositioning.
• Included universal column adapter sleeves allow direct activation, equilibration, and elution of 1–3 mL SPE cartridges using common volumetric sampling tubes — eliminating manual transfer steps and reducing analyte loss.
• Integrated fine-adjustment vacuum regulator enables precise control over flow rate during conditioning, loading, and washing — essential for maintaining sorbent bed integrity and method robustness.

Sample Compatibility & Compliance

The SPE-12F supports standard 1 mL, 3 mL, and 6 mL SPE cartridges across major sorbent chemistries (reversed-phase, normal-phase, mixed-mode, and ion-exchange). It is routinely deployed in accredited environmental labs performing EPA 525.3 (pesticides in water), EPA 8270 (semivolatile organics), and ISO 17993 (water quality — determination of pharmaceuticals) workflows. The PTFE-wetted architecture ensures full compatibility with GLP/GMP environments where material traceability and extractables/leachables control are mandated. While the unit itself is not electronically validated, its mechanical design facilitates integration into documented SOPs meeting FDA 21 CFR Part 11 data integrity expectations when paired with auditable logbooks and calibrated vacuum gauges.

Software & Data Management

As a fully manual manifold, the SPE-12F requires no embedded firmware or proprietary software. All operational parameters — including vacuum setpoint, dwell time per step, and cartridge batch identifiers — are recorded externally via laboratory notebooks or LIMS-integrated electronic workbooks. This analog architecture eliminates cybersecurity risks associated with connected instrumentation and simplifies IQ/OQ validation protocols. Users may integrate digital pressure logging (via external kPa transducers) or barcode-scanned cartridge tracking to support ALCOA+ data governance principles.

Applications

• Pre-concentration and cleanup of pesticides, PAHs, and PCBs in drinking water and wastewater per EPA methods.
• Isolation of antibiotics, beta-blockers, and NSAIDs from urine, plasma, and surface water for LC-MS/MS quantitation.
• Removal of phospholipids and proteins from biofluids prior to small-molecule metabolomics profiling.
• Matrix removal in food safety testing (e.g., mycotoxins in cereals, veterinary drug residues in milk).
• Method development and validation studies requiring high inter-run reproducibility under fixed vacuum conditions.

FAQ

Is the SPE-12F compatible with 6 mL SPE cartridges?
Yes — the column tray accommodates cartridges up to 80 mm in height and 16 mm in diameter; standard 6 mL formats fit without modification.
Can it be used under nitrogen purging instead of vacuum?
No — the manifold is designed exclusively for vacuum-driven flow; positive-pressure operation requires a separate gas manifold system.
Does it include a vacuum pump?
No — a compatible diaphragm or rotary vane vacuum pump (capable of reaching ≥80 kPa vacuum) must be sourced separately.
What is the maximum recommended operating vacuum for routine use?
While the chamber is rated for ≥80 kPa, we recommend maintaining ≤65 kPa during sample loading to prevent channeling or sorbent dry-out, per ISO 21747 guidance on SPE method robustness.
Are replacement PTFE gaskets and column adapters available?
Yes — MENTS supplies OEM-certified spare parts kits (P/N: SPE-12F-SPARE-KIT) with traceable material certifications compliant with USP Class VI biocompatibility standards.