Zhiyunda CGT-3100 Immunoquantitative Analyzer (Colloidal Gold Reader)
| Brand | Zhiyunda |
|---|---|
| Origin | Beijing, China |
| Manufacturer Type | Authorized Distributor |
| Product Origin | Domestic (China) |
| Model | CGT-3100 |
| Pricing | Available Upon Request |
Overview
The Zhiyunda CGT-3100 Immunoquantitative Analyzer is a dedicated colloidal gold-based lateral flow immunoassay (LFIA) reader engineered for precise, field-deployable quantification of low-molecular-weight contaminants in food and agricultural samples. It operates on the principle of reflectance photometry—measuring wavelength-specific optical absorption (typically at 635 nm or 800 nm) from colloidal gold-labeled test (T) and control (C) lines immobilized on nitrocellulose membranes. By calculating the normalized signal ratio (T/C peak area or peak height), the instrument correlates optical density to analyte concentration via preloaded or user-defined calibration curves. Designed for compliance with routine screening workflows in regulated environments, the CGT-3100 delivers trace-level detection of veterinary drug residues, mycotoxins, banned substances, and adulterants—without requiring lab-grade infrastructure or trained technicians.
Key Features
- Integrated solid-state optical detection system with stable LED excitation source and high-sensitivity photodiode array for direct acquisition of raw reflectance signals from LFIA strips—minimizing signal drift and enhancing inter-assay reproducibility.
- 10.1-inch full-color capacitive touchscreen with intuitive graphical user interface (GUI); guided workflow ensures operator independence after minimal training.
- Pre-programmed quantitative methods for ≥15 priority analytes including aflatoxin B1, clenbuterol, ractopamine, salbutamol, poppy shell alkaloids, tetracyclines, sulfonamides, chloramphenicol, melamine, and fluoroquinolones—each validated against reference standards per ISO/IEC 17025-aligned protocols.
- User-configurable curve fitting (linear, 4-parameter logistic, log-log) and method editing capability—enabling method optimization for matrix-specific recovery or expanded dynamic range.
- Onboard rechargeable lithium-ion battery supporting ≥8 hours of continuous operation—critical for mobile surveillance, farm-gate testing, and remote inspection sites without AC power access.
- Dual USB 2.0 ports for peripheral integration (e.g., external barcode scanners, thermal printers, flash drives) and optional Bluetooth/Wi-Fi modules for secure data transmission to centralized LIMS or regulatory dashboards.
Sample Compatibility & Compliance
The CGT-3100 accepts standard lateral flow test cassettes and strip formats (width: 3–5 mm; length: ≤80 mm) used across accredited rapid test kits for food safety applications. It supports sample types including milk, meat homogenates, grain extracts, honey, aquatic tissue supernatants, and herbal decoctions—following standardized extraction procedures outlined in GB/T 5009.x, SN/T series, and AOAC Official Methods®. Instrument firmware includes audit-trail logging (user ID, timestamp, method version, raw signal values) compliant with GLP principles and suitable for internal QA review. While not FDA 21 CFR Part 11-certified out-of-the-box, its data export architecture (CSV, PDF reports with embedded metadata) facilitates integration into validated laboratory information management systems meeting GMP or HACCP documentation requirements.
Software & Data Management
Embedded Linux-based firmware enables local storage of ≥10,000 test records with searchable filters (date, analyte, operator, batch ID). Data export options include USB mass storage, direct thermal printing (with QR-coded report headers), and encrypted Wi-Fi upload to cloud-hosted platforms via TLS 1.2. Software supports CSV-formatted raw signal tables (T-line absorbance, C-line absorbance, T/C ratio, interpolated concentration) for third-party statistical analysis. Firmware updates are delivered via signed OTA packages to ensure integrity and traceability. All measurement logs retain immutable timestamps synchronized via NTP when network-connected.
Applications
The CGT-3100 serves as a frontline quantitative screening tool across public health and supply chain assurance domains: routine monitoring of antibiotic residues in dairy processing plants; verification of mycotoxin thresholds in grain elevators and feed mills; rapid verification of prohibited substance use in livestock farms; on-site screening at border inspection posts for imported seafood and spices; and daily quality checks in school cafeterias, hospital kitchens, and retail distribution centers. Its portability and battery operation make it especially suited for unannounced inspections by municipal food safety bureaus and provincial agricultural commissions.
FAQ
What types of lateral flow assays are compatible with the CGT-3100?
The instrument is optimized for colloidal gold–based immunochromatographic strips using standard nitrocellulose membranes and conjugate pads. It does not support fluorescent, enzymatic, or quantum-dot–labeled assays.
Can users import custom calibration curves from external HPLC or ELISA validation data?
Yes—via USB, users may load CSV files containing concentration–signal pairs and select appropriate curve-fitting algorithms during method setup.
Is the device suitable for ISO/IEC 17025-accredited laboratories?
While the hardware meets key metrological requirements (stability, repeatability, linearity), formal accreditation requires laboratory-specific validation per ISO/IEC 17025 Clause 5.4 and documented uncertainty budgets—beyond the scope of factory calibration.
How is data security ensured during wireless transmission?
Wi-Fi uploads utilize WPA2-Enterprise authentication and AES-256 encryption; no credentials or results are stored on the device’s wireless module after session termination.
