Beiyu CYD-420 Intelligent Salt Iodine Analyzer
| Brand | Beiyu Technologies |
|---|---|
| Origin | Shanghai, China |
| Model | CYD-420 |
| Sample Positions | 42 |
| Digestion Positions | 4 |
| Titration Positions | 2 |
| Minimum Titration Volume | 0.02 mL |
| Maximum Titration Volume | 20 mL |
| Repeatability | <2 mg/kg |
| Compliance | GB/T 13025.7–2012 |
Overview
The Beiyu CYD-420 Intelligent Salt Iodine Analyzer is a fully automated benchtop analytical system engineered for precise, standardized quantification of iodine content in edible salt and industrial salt samples. It implements the redox titration methodology specified in GB/T 13025.7–2012, “General Test Methods for Salt Industry – Determination of Iodine”, a national standard aligned with ISO/IEC 17025–compliant laboratory practices. The instrument operates on the principle of controlled oxidation–reduction titration, where iodide (I⁻) in acidified salt solution is oxidized to elemental iodine (I₂) by potassium bromate (KBrO₃) in the presence of potassium bromide (KBr), followed by back-titration with standardized sodium thiosulfate (Na₂S₂O₃). Endpoint detection is performed optically via high-resolution machine vision, eliminating subjective visual interpretation and ensuring metrological traceability. Designed for routine quality control laboratories in food safety agencies, salt producers, and regulatory testing centers, the CYD-420 delivers reproducible results under GLP-aligned operational protocols.
Key Features
- Fully integrated robotic sample handling: A precision mechanical arm autonomously retrieves, positions, and transfers up to 42 salt samples—eliminating manual pipetting errors and operator fatigue.
- Dual independent titration modules: Two dedicated burettes operate simultaneously with isolated fluidic pathways—no shared pumps, valves, or tubing—to prevent carryover and cross-contamination between analyses.
- Intelligent thermal management: Real-time temperature monitoring of digestion vessels enables dynamic adjustment of heating power; boiling point detection triggers automatic transition from digestion to cooling phase.
- Active cooling integration: Integrated cold-water bath rapidly reduces sample temperature post-digestion, minimizing iodine volatilization and improving measurement stability.
- Machine vision endpoint recognition: A calibrated CMOS imaging system continuously monitors solution color transition (from brown iodine complex to colorless iodide–thiosulfate complex) with sub-second temporal resolution, enabling segmented titration and adaptive volume delivery.
- Modular reagent dispensing: Each reagent (KBrO₃/KBr mixture, HCl, Na₂S₂O₃) is stored in sealed, pressure-regulated reservoirs with peristaltic dosing—ensuring consistent volumetric accuracy and long-term reagent integrity.
Sample Compatibility & Compliance
The CYD-420 is validated for use with dry, granulated, or powdered salt matrices—including iodized table salt, low-sodium blends, and sea salt derivatives—with iodine concentration ranges spanning 15–80 mg/kg. It supports both direct titration (for high-iodine samples) and oxidation–reduction back-titration (for standard compliance testing). All hardware, software logic, and calibration routines conform strictly to GB/T 13025.7–2012 procedural requirements, including specified reagent concentrations, digestion time (≥5 min at reflux), and endpoint criteria. The system meets essential elements of ISO/IEC 17025:2017 clause 7.2 (method validation), supports audit-ready electronic records, and is compatible with 21 CFR Part 11–compliant LIMS interfaces when deployed with optional digital signature and user access control modules.
Software & Data Management
The embedded Windows-based control software provides full method configuration, real-time process visualization, and automated report generation in PDF and CSV formats. Each analysis log includes timestamped metadata: sample ID, operator ID, digestion temperature profile, titrant consumption curve, optical intensity trajectory, and final iodine concentration with expanded uncertainty (k=2). Audit trails record all parameter modifications, user logins, and instrument status changes. Data export supports HL7 and ASTM E1384–compliant structured formats for seamless integration into enterprise LIMS platforms. Optional cloud synchronization enables remote monitoring and centralized QC dashboarding across multi-site laboratories.
Applications
- Routine iodine fortification verification in commercial salt production lines.
- Regulatory compliance testing for national food safety authorities enforcing iodine labeling requirements.
- Method transfer and reference material certification in metrology institutes.
- Stability studies of iodized salt under accelerated storage conditions (e.g., humidity/temperature cycling).
- Validation of alternative iodine sources (e.g., potassium iodate vs. potassium iodide) in fortified formulations.
FAQ
Does the CYD-420 require manual calibration before each batch?
No—daily calibration is performed automatically using certified iodine reference standards; system verification checks occur at startup and after every 10 samples.
Can the instrument handle samples with high moisture or anti-caking agents?
Yes—pre-programmed drying compensation algorithms adjust digestion parameters based on gravimetric moisture data imported from external balances.
Is method validation documentation provided?
Yes—the instrument ships with a full validation package including IQ/OQ/PQ protocols, linearity studies (5–100 mg/kg), LOD/LOQ determination, and inter-laboratory reproducibility data per ISO 5725.
What maintenance intervals are recommended?
Fluidic path cleaning every 200 runs; optical lens inspection monthly; robotic arm lubrication semi-annually—detailed schedules are embedded in the maintenance module.
Is remote diagnostics supported?
Yes—secure TLS-encrypted remote access allows Beiyu Field Application Engineers to perform firmware updates, troubleshoot sensor drift, and verify calibration traceability without onsite visits.
