TIANLONG GeneRotex Series Automated Nucleic Acid Extraction System

Overview

The TIANLONG GeneRotex Series Automated Nucleic Acid Extraction System is a CE-marked (Class I IVD), regulatory-filed magnetic bead-based platform engineered for high-fidelity, low-contamination nucleic acid isolation in clinical diagnostics, public health laboratories, and translational research settings. Unlike conventional orbital or linear shaking systems, GeneRotex implements proprietary Rotary Mixing Technology (RMT)—a patented motion profile (ZL201710435931.8) combining controlled vertical oscillation with precise 360° rotational agitation. This dual-axis mixing minimizes aerosol generation during lysis and binding steps, significantly reducing cross-contamination risk while maintaining uniform bead suspension and surface interaction kinetics. The system’s modular architecture supports three interchangeable throughput configurations—GeneRotex 24, 48, and 96—each optimized for distinct sample volume ranges (50–15,000 µL), enabling seamless adaptation from low-volume viral load quantification to high-yield cfDNA extraction for oncology applications. All variants operate under closed-tube, fully enclosed processing chambers with real-time environmental monitoring, aligning with ISO 22174 and CLSI EP25-A guidelines for molecular diagnostic preanalytical integrity.

Key Features

• Proprietary Rotary Mixing Technology (RMT): Patented dual-motion agitation reduces aerosol formation by >70% versus standard vortex-based platforms, lowering false-positive rates in high-sensitivity assays.
• Modular Throughput Flexibility: Selectable 24-, 48-, or 96-sample modules—each with dedicated consumables (custom 7-well ultra-large-volume strips, 48-well deep-well plates, and 96-well deep-well plates + six-well combi-strips) to eliminate reagent waste and support 1–96 sample scalability.
• Integrated Contamination Mitigation Suite: Motorized auto-lid actuation eliminates manual contact; programmable UV-C irradiation (254 nm, 0–60 min duration); HEPA-filtered negative-pressure exhaust (≥99.97% @ 0.3 µm) with replaceable filter cartridge.
• Thermal Precision Engineering: Dual independent heating zones (lysis and elution) maintain ±0.5°C stability across 20–120°C range, supporting stringent protocols for difficult-to-lyse Gram-positive bacteria and formalin-fixed paraffin-embedded (FFPE) tissue.
• Bilingual Human-Machine Interface: 7-inch capacitive touchscreen with intuitive icon-driven navigation; supports barcode-triggered protocol launch via external scanner (USB HID compliant).
• Data Integrity Architecture: Internal storage for up to 10,000 user-defined protocols; timestamped audit trail exportable via USB; password-protected method editing and version-controlled program management.

Sample Compatibility & Compliance

GeneRotex accommodates diverse biological matrices—including whole blood, plasma, serum, saliva, nasopharyngeal swabs, urine, FFPE sections, and environmental swab eluates—without hardware modification. Its open reagent policy ensures compatibility with all TIANLONG-branded magnetic bead kits (e.g., TLNPA-96, TLNPA-48-L, TLNPA-24-U) and third-party ISO 13485-manufactured kits using standard 96-well or custom-format consumables. Each model holds Shaanxi Provincial Medical Device Filing Certificate No. 20150054, affirming conformity with GB/T 27025-2019 (equivalent to ISO/IEC 17025) for testing laboratory competence. The system’s software architecture supports ALCOA+ data governance principles and provides configurable electronic signatures, audit trails, and user access levels—facilitating alignment with FDA 21 CFR Part 11, EU Annex 11, and GxP-compliant quality systems.

Software & Data Management

The embedded firmware (v4.2+) features a secure, role-based operating system with granular permission controls (administrator, technician, operator). Protocols are structured as hierarchical step sequences—defining magnetic separation timing, heating ramp rates, mixing intensity, and aspiration parameters—with real-time deviation alerts. All run logs include instrument ID, operator ID, start/end timestamps, thermal profiles, and error codes. Data export formats include CSV (for LIMS integration) and PDF (for QC reporting). Optional Ethernet connectivity enables remote monitoring via TIANLONG’s centralized LabLink™ server, supporting multi-instrument fleet management and predictive maintenance analytics based on motor duty cycles and heater lifetime metrics.

Applications

• Clinical Microbiology: High-throughput SARS-CoV-2, influenza A/B, RSV, and MPXV RNA extraction from pooled nasopharyngeal specimens with LOD validation to 2 copies/mL.
• Oncology Diagnostics: Isolation of circulating tumor DNA (ctDNA) from 5 mL plasma using the GeneRotex 24 module, achieving >95% recovery of 50–200 bp fragments for downstream NGS library prep.
• Transplant Monitoring: Quantitative EBV and CMV DNA extraction from whole blood with minimized PCR inhibition carryover, supporting USP endotoxin-sensitive workflows.
• Food & Environmental Testing: Pathogen DNA isolation from complex matrices (e.g., leafy greens, wastewater concentrates) using high-salt lysis buffers compatible with GeneRotex’s extended volume capacity.
• Biobanking: Standardized genomic DNA extraction from residual clinical specimens, ensuring inter-laboratory reproducibility per ISO 20387 biobank accreditation requirements.

FAQ

What regulatory certifications does the GeneRotex system hold?
The GeneRotex series is registered under Shaanxi Provincial Medical Device Filing No. 20150054 and complies with GB/T 27025-2019 (ISO/IEC 17025), ISO 13485:2016, and IEC 61010-1 safety standards. It is not FDA-cleared but may be used in research-use-only (RUO) or laboratory-developed test (LDT) environments under local regulatory oversight.
Can GeneRotex process non-TIANLONG reagents?
Yes—the system accepts any magnetic bead-based kit compatible with standard 96-well deep-well plates or custom-format strips meeting dimensional specifications outlined in TIANLONG’s Interoperability Guide v3.1.
How is cross-contamination prevented during high-throughput runs?
Through a tripartite strategy: (1) RMT-induced aerosol suppression, (2) HEPA-filtered negative-pressure airflow isolating internal chamber exhaust, and (3) post-run UV-C irradiation (user-programmable duration and intensity).
Is remote software update supported?
Firmware updates require authenticated USB media; network-based updates are disabled by default to comply with cybersecurity best practices for diagnostic instrumentation (per IEC 81001-5-1).
What maintenance intervals are recommended?
HEPA filters should be replaced every 6 months or after 1,000 cycles; UV lamps every 12 months; and magnetic drive calibration verified annually using TIANLONG’s certified reference kit (PN: CAL-GX-2024).