KingFisher Duo Automated Magnetic Particle Processor

Overview

The KingFisher Duo Automated Magnetic Particle Processor is a benchtop nucleic acid purification system engineered for high-throughput, walk-away automation in molecular diagnostics, clinical research, and next-generation sequencing (NGS) sample preparation workflows. Utilizing magnetic bead-based solid-phase extraction, the instrument applies precisely controlled magnetic fields to capture, wash, and elute nucleic acids from diverse biological matrices—including whole blood, plasma, saliva, tissue homogenates, and cultured cells—without centrifugation or vacuum manifolds. Its dual-channel architecture enables independent operation of two distinct protocols simultaneously: one module configured with a 1×6 magnetic head for low-to-medium throughput applications (e.g., targeted PCR panels), and the other with a 1×12 head for higher-volume processing (e.g., pathogen screening or biobanking). The integrated thermal block supports on-instrument incubation steps (e.g., proteinase K digestion, DNase/RNase treatment, or hybridization), eliminating manual transfer between instruments and reducing contamination risk.

Key Features

• Dual independent processing modules: Operate two different protocols—each with customizable timing, mixing intensity, and magnetic separation duration—on a single platform.
• Modular magnetic head design: Interchangeable 1×6 and 1×12 heads allow flexible adaptation to plate formats (96-well deep-well, 96-well PCR, or 24-well tubes) without hardware recalibration.
• On-board thermal block: Programmable temperature range from 4 °C to 95 °C with ±0.5 °C accuracy; supports enzymatic reactions, denaturation, and heat-inactivation steps within the same run.
• Robust liquid handling: Non-contact magnetic particle manipulation minimizes tip clogging and cross-contamination; no pipette tips or disposable nozzles required.
• Intuitive touchscreen interface: Preloaded with validated methods for >120 commercial kit chemistries (including MagMAX™, PureLink™, and QIAamp®); method import/export via USB or network connection.
• Compliance-ready architecture: Full support for 21 CFR Part 11-compliant data management when paired with Thermo Fisher Connect™ software, including role-based user permissions, audit trails, and electronic signature capability.

Sample Compatibility & Compliance

The KingFisher Duo processes samples across clinical, environmental, and agricultural testing domains. It accommodates input volumes from 50 µL to 1 mL and handles viscous or particulate-laden lysates through adaptive mixing algorithms that adjust agitation speed and duration based on real-time viscosity estimation. All consumables—including KingFisher Deep-Well Plates, KingFisher 96-Well PCR Plates, and magnetic bead reagent kits—are manufactured under ISO 13485 quality management systems. When operated with FDA-cleared or CE-IVD-marked kits (e.g., MagMAX Viral/Pathogen Nucleic Acid Isolation Kit), the system meets regulatory requirements for in vitro diagnostic use in CLIA-certified laboratories. Process validation documentation—including IQ/OQ/PQ templates and performance qualification reports—is available upon request for GMP/GLP environments.

Software & Data Management

Instrument control and method development are managed via the embedded KingFisher Software v5.x, which provides protocol wizards, step-by-step troubleshooting guidance, and real-time run monitoring with event logging. For enterprise integration, Thermo Fisher Connect™ serves as the central hub for remote monitoring, fleet management, and secure cloud-based data archiving. All method files, run logs, and result exports (CSV, PDF, LIMS-compatible XML) are digitally signed and time-stamped. Audit trails record every user action—including login/logout, parameter edits, and run initiation—with immutable timestamps and operator IDs. Electronic signatures comply with ALCOA+ principles and support full traceability during regulatory inspections.

Applications

• Clinical virology: High-yield RNA isolation from nasopharyngeal swabs for SARS-CoV-2, influenza, RSV, and emerging pathogen detection.
• Transplant monitoring: Cell-free DNA (cfDNA) extraction from plasma for donor-derived cell-free DNA (dd-cfDNA) quantification in kidney and heart transplant recipients.
• Microbiome research: Simultaneous DNA and RNA purification from stool or oral rinse samples for 16S rRNA gene sequencing and metatranscriptomic profiling.
• Forensic genetics: Robust recovery of degraded DNA from touch samples, bone powder, or formalin-fixed paraffin-embedded (FFPE) tissues.
• Biopharma QC: Residual host cell DNA quantification in monoclonal antibody and viral vector manufacturing batches.

FAQ

What types of magnetic beads are compatible with the KingFisher Duo?
The system is optimized for carboxyl- and streptavidin-coated superparamagnetic beads ranging from 0.5 µm to 2.8 µm in diameter. Compatibility extends to third-party beads when used with validated binding/wash/elution buffers.
Can the KingFisher Duo be integrated into a robotic liquid handling workflow?
Yes—it supports standard ANSI/SLAS footprint dimensions and offers RS-232, Ethernet, and USB interfaces for bidirectional communication with LIMS and robotic arms (e.g., Hamilton STAR, Tecan Freedom EVO).
Is thermal lysis supported without external heating devices?
Yes—the integrated thermal block enables on-instrument thermal lysis at up to 95 °C, compatible with proteinase K–based and detergent-free lysis chemistries.
How often does the magnetic head require maintenance or calibration?
No routine calibration is required. Magnetic field strength is factory-validated and monitored continuously via internal Hall-effect sensors; only annual preventive maintenance (PM) by certified Thermo Fisher service engineers is recommended.
Does the system support unattended overnight runs?
Yes—fully automated protocols can execute sequentially across both channels, with automatic shutdown and status reporting via email or Thermo Fisher Connect™ notifications upon completion.