Agela SPE-M08 Positive-Pressure Multi-Channel Solid Phase Extraction System

Overview

The Agela SPE-M08 Positive-Pressure Multi-Channel Solid Phase Extraction System is an engineered solution for high-throughput, reproducible sample preparation in analytical laboratories. Unlike vacuum-driven SPE manifolds, the SPE-M08 employs regulated positive-pressure gas (typically nitrogen or compressed air) to drive solvent and sample through solid-phase extraction cartridges or disks. This principle ensures consistent flow dynamics across all channels—critical for method robustness, especially when handling variable-viscosity matrices or low-concentration analytes. Designed for routine use in environmental monitoring, food safety testing, pharmaceutical QC, and clinical research labs, the system delivers precise control over elution kinetics without reliance on vacuum pumps or complex pressure regulators. Its modular architecture supports method scalability from single-sample optimization to parallel processing of up to eight samples under identical pneumatic conditions.

Key Features

• Eight independently adjustable PTFE-coated needle valves—each governing flow rate for a dedicated SPE cartridge or disk, enabling method-specific gradient elution or differential loading across channels.
• Dual independent air pathways: one optimized for fine-tuned liquid flow regulation (0–100 psi range), the other dedicated to post-elution drying with controlled purge gas flow—minimizing residual solvent carryover and improving analyte recovery consistency.
• Universal compatibility with standard 1 mL, 3 mL, 6 mL, and 12 mL SPE cartridges as well as 47 mm SPE membrane disks—eliminating need for proprietary consumables.
• PTFE-wetted fluid path throughout—ensuring chemical inertness against aggressive solvents (e.g., acetonitrile, dichloromethane, methanol, 0.1% formic acid) and preventing metal ion leaching or adsorptive losses.
• Modular design accommodates optional large-volume sampling accessories—including gravity-fed reservoirs and peristaltic pre-load modules—for seamless processing of aqueous samples up to 5 L without column clogging or breakthrough.
• Semi-automatic operation balances operator control with procedural repeatability: manual solvent addition and fraction collection are retained for flexibility, while pneumatic delivery eliminates variability introduced by inconsistent vacuum levels or user-applied pressure.

Sample Compatibility & Compliance

The SPE-M08 supports diverse sample matrices including surface water, wastewater, plasma, urine, milk extracts, and homogenized food tissues—provided appropriate sorbent chemistry (e.g., C18, HLB, SCX, SAX, Florisil) is selected. Its PTFE construction complies with USP requirements for polymeric components in contact with analytical reagents. While the instrument itself does not carry CE or UL certification, its pneumatic architecture meets general laboratory safety guidelines for low-pressure gas systems (<100 psi). Method validation workflows using this platform align with EPA Methods 505, 525.3, and 8270, as well as ISO 17025-compliant SOPs requiring documented flow consistency and channel-to-channel reproducibility (RSD ≤ 5% across eight replicates under standardized load conditions).

Software & Data Management

The SPE-M08 operates without embedded firmware or proprietary software—intentionally designed for integration into existing laboratory informatics ecosystems. All operational parameters (gas pressure settings, valve positions, timing logs) are recorded manually or via external electronic lab notebooks (ELNs) such as LabArchives or Benchling. For GLP/GMP environments, users may pair the system with digital pressure gauges equipped with RS-232/USB output and time-stamped logging capability to satisfy FDA 21 CFR Part 11 audit trail requirements. No password protection, user roles, or electronic signatures are built-in—consistent with its role as a physical sample preparation tool rather than a regulated data-generating instrument.

Applications

• Environmental analysis: Pre-concentration of trace-level pesticides, PAHs, pharmaceuticals, and PFAS from 1–5 L water samples prior to LC-MS/MS or GC-MS analysis.
• Food safety: Cleanup of mycotoxin extracts from cereal grains or aflatoxin B1 from peanut butter homogenates using immunoaffinity or mixed-mode sorbents.
• Pharmaceutical development: Isolation of drug metabolites from human plasma using protein precipitation followed by HLB-based SPE—enabling high recovery (>85%) and low matrix effect (<20%).
• Clinical toxicology: Simultaneous extraction of benzodiazepines, opioids, and stimulants from urine specimens across eight patient samples within a single run—reducing inter-run variability in quantitative immunoassay or LC-MS confirmation workflows.
• Method development: Rapid screening of sorbent selectivity and solvent strength combinations across parallel channels—accelerating optimization of multi-analyte SPE protocols.

FAQ

What types of SPE cartridges and disks are compatible with the SPE-M08?
Standard cylindrical SPE cartridges (1–12 mL format) and 47 mm diameter SPE membrane disks are fully supported. Adapters for non-standard formats (e.g., 96-well plates) are not included but may be integrated via third-party manifold interfaces.
Can the SPE-M08 be used under GMP/GLP-regulated conditions?
Yes—when paired with calibrated pressure instrumentation, documented valve position logs, and validated SOPs. It does not generate electronic records autonomously, so compliance depends on user-established procedural controls and traceability practices.
Is solvent resistance verified for strong acids or bases?
All wetted surfaces are PTFE; therefore, resistance to concentrated HCl (up to 6 M), NaOH (up to 2 M), and oxidizing agents (e.g., 30% H₂O₂) is inherent—but prolonged exposure above 80 °C is not recommended due to PTFE thermal limits.
How is cross-contamination prevented between channels?
Each channel features isolated pneumatic routing and dedicated valve actuation. Physical separation of cartridge holders and strict adherence to cleaning protocols (e.g., blank runs with methanol/water) ensure carryover remains below 0.1% for typical analytes.
Does the system support sequential elution with multiple solvents?
Yes—by manually switching solvent reservoirs between steps and adjusting individual valve positions, users can execute multi-step conditioning, loading, washing, and elution sequences across all eight channels independently.