ZK-01 32-Channel Fully Automated Magnetic Bead-Based Nucleic Acid Extraction and Purification System

Overview

The ZK-01 is a dedicated, fully automated nucleic acid extraction and purification system engineered for high-reproducibility magnetic bead-based isolation of DNA and RNA from diverse biological matrices. It operates on the principle of solid-phase reversible immobilization (SPRI), leveraging functionalized superparamagnetic nanoparticles that selectively bind nucleic acids under controlled chaotropic and pH conditions. Following lysis—achieved via integrated thermal and mechanical agitation—the system performs sequential binding, washing (with ethanol-based buffers), and elution steps within a closed, sealed reaction chamber. The 32-channel parallel architecture enables simultaneous processing of up to 32 samples in a single run using standard 96-well deep-well plates, with precise control over incubation temperature (ambient to 110 °C), mixing kinetics (adjustable amplitude and frequency), and magnetic separation timing. Designed for routine deployment in regulated and non-regulated environments alike, the ZK-01 meets fundamental engineering requirements for walk-away automation, operator safety, and cross-contamination mitigation—critical for applications spanning clinical diagnostics, public health surveillance, forensic genomics, and academic research.

Key Features

• 32 independent magnetic rod channels with >98% bead recovery efficiency, ensuring consistent nucleic acid yield and minimizing carryover between cycles
• Modular throughput scalability—supports 16-, 32-, or 64-sample configurations via field-upgradable hardware modules and method templates
• Closed-system architecture with integrated HEPA-filtered recirculating airflow and UV-C irradiation (254 nm) to suppress aerosol-mediated cross-contamination between wells and runs
• Programmable thermal control for lysis and elution steps, enabling optimization for challenging sample types including FFPE tissue, whole blood, saliva, soil, and plant material
• Open reagent platform compatible with third-party magnetic bead kits (e.g., those compliant with ISO 20387:2018 biobanking standards), eliminating vendor lock-in
• 7-inch capacitive touchscreen interface with intuitive graphical workflow builder; supports creation, editing, and versioning of extraction protocols without coding
• Wi-Fi-enabled remote monitoring and control via secure web portal or dedicated mobile application—supports real-time status alerts, audit log review, and protocol push deployment
• Automated liquid handling validation routines, including tip presence detection, volume verification, and magnetic head calibration checks prior to each run

Sample Compatibility & Compliance

The ZK-01 accommodates a broad spectrum of input materials—including whole blood (EDTA/K2EDTA), serum, plasma, buccal swabs, nasopharyngeal swabs, bacterial cultures, cultured cells, and homogenized tissue—with no manual pre-processing required. All fluidic pathways contact only disposable consumables (e.g., 96-well deep-well plates, magnetic rod covers, and sealing films), eliminating risk of carryover and simplifying cleaning validation. The system adheres to core design principles aligned with ISO 13485:2016 (medical device quality management) and supports laboratory compliance with CLIA, CAP, and GLP frameworks through full electronic audit trail functionality—including user login history, parameter change logs, run timestamps, and instrument event records. While not FDA 510(k)-cleared as an IVD device, its architecture facilitates integration into workflows compliant with USP , ISO/IEC 17025, and WHO TRS 1018 Annex 5 for molecular diagnostic testing.

Software & Data Management

The embedded firmware features a role-based access control (RBAC) system supporting administrator, operator, and viewer profiles with configurable permissions. All extraction protocols are stored as encrypted XML files with digital signatures to prevent unauthorized modification. Raw run metadata—including temperature profiles, mixing cycles, magnetic actuation timing, and error codes—is exported in CSV or PDF format for LIMS integration. Audit trails comply with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) and are retained for ≥12 months by default. Optional cloud backup and SFTP export enable centralized data governance across multi-site laboratories. Software updates are delivered via signed OTA packages with SHA-256 verification.

Applications

• Routine viral RNA extraction for SARS-CoV-2, influenza A/B, RSV, and other respiratory pathogens in clinical microbiology labs
• High-throughput genomic DNA isolation for SNP genotyping, NGS library preparation, and qPCR-based biomarker validation
• Forensic STR profiling from low-yield or degraded samples (e.g., touch DNA, bone fragments)
• Environmental pathogen screening in food safety and water quality testing programs
• Plant and animal genome-wide association studies requiring standardized nucleic acid inputs across hundreds of field-collected samples
• Biobank sample processing under ISO 20387-compliant operational procedures

FAQ

Does the ZK-01 support both DNA and RNA extraction in the same run?
Yes—provided the selected magnetic bead kit and protocol are validated for dual-modality isolation. The system does not differentiate nucleic acid type; separation specificity is determined solely by buffer chemistry and binding conditions.
Can I use non-OEM magnetic beads with this instrument?
Yes. The ZK-01 is an open-platform system designed to work with any commercially available magnetic bead reagents intended for 96-well plate formats, subject to compatibility testing per your lab’s SOPs.
Is the instrument compliant with FDA 21 CFR Part 11?
The system provides foundational controls (electronic signatures, audit trails, access logs) but requires site-specific configuration and validation to achieve full Part 11 compliance in regulated GxP environments.
What maintenance is required beyond routine cleaning?
Annual calibration of thermal modules and magnetic actuation timing is recommended. No scheduled lubrication or fluidic pump replacement is required due to brushless motor and sealed solenoid design.
How is cross-contamination prevented between samples during a 32-sample run?
Each magnetic rod operates independently with dedicated wash stations; combined with UV sterilization between runs and HEPA-filtered laminar airflow, inter-well aerosol transfer is reduced to <1 CFU per 10⁶ operations (validated per ISO 15189 Annex B).