Jiada Xiaotianshe GDYQ-2000S Rapid Peroxide Value Analyzer for Edible Vegetable Oils
| Brand | Jiada Xiaotianshe |
|---|---|
| Origin | Jilin, China |
| Manufacturer Type | Direct Manufacturer |
| Country of Origin | China |
| Model | GDYQ-2000S |
| Detection Limit | 0.3 mmol/kg |
| Measurement Range | 0.0–11.0 mmol/kg |
| Accuracy | ±2% |
| Analysis Time | ≤5 min per sample |
| Display | Backlit LCD with Chinese UI |
| Control System | Embedded MCU with data logging, USB connectivity, and on-board statistical processing |
| Sample Prep | Integrated proprietary pre-treatment module + single-use reagent kits |
| Compliance | Modified GB/T 5009.37–2003 method |
Overview
The Jiada Xiaotianshe GDYQ-2000S Rapid Peroxide Value Analyzer is a dedicated benchtop instrument engineered for the quantitative determination of peroxide value (PV) in edible vegetable oils—a critical indicator of primary lipid oxidation and early-stage rancidity. Based on a validated colorimetric iodometric principle aligned with the modified GB/T 5009.37–2003 standard, the system quantifies hydroperoxides through controlled liberation of iodine from potassium iodide under acidic conditions, followed by spectrophotometric measurement at 350–360 nm. Unlike conventional titration-based methods requiring skilled operators and ≥20 minutes per analysis, the GDYQ-2000S integrates automated reagent dispensing, temperature-stabilized reaction incubation, and optical signal acquisition to deliver repeatable results in ≤5 minutes—enabling high-throughput screening across raw material intake, in-process quality control, and finished-product release testing in edible oil refineries, food manufacturing facilities, and third-party testing laboratories.
Key Features
- Optimized assay protocol compliant with GB/T 5009.37–2003, adapted for enhanced precision and reduced inter-operator variability
- Integrated sample preparation module—including solvent extraction, phase separation, and filtrate conditioning—eliminating manual glassware handling and minimizing contamination risk
- Dedicated single-use reagent cartridges pre-calibrated for batch consistency; each kit supports up to 20 determinations without recalibration
- Embedded microcontroller architecture with real-time clock, non-volatile memory (≥1000 test records), and USB 2.0 interface for data export to LIMS or Excel-compatible formats
- Backlit monochrome LCD display with intuitive Chinese-language menu navigation, contextual help prompts, and guided workflow sequencing
- On-board statistical engine supporting mean, SD, CV%, and pass/fail flagging against user-defined specification limits (e.g., Codex Alimentarius STAN 210–1999 PV ≤ 10 mmol/kg for refined oils)
Sample Compatibility & Compliance
The GDYQ-2000S is validated for use with common edible vegetable oils including soybean, rapeseed (canola), sunflower, peanut, palm, and corn oils—both crude and refined grades. It accommodates samples with viscosity up to 50 cSt at 40 °C and free fatty acid (FFA) content ≤ 5%. While not certified to ISO/IEC 17025 or accredited under GLP, the instrument’s traceable calibration procedure (using KIO3-based reference standards traceable to NIM, China) supports internal method validation per AOAC Official Method 982.21 and IUPAC Standard Method 2.201. Data integrity features—including operator ID tagging, timestamped audit logs, and write-protected result archives—align with basic requirements for FDA 21 CFR Part 11 compliance when deployed within controlled QA/QC environments.
Software & Data Management
No external PC software is required for routine operation; all configuration, measurement, and reporting occur via the onboard interface. However, optional PC-based utility software (supplied on USB drive) enables advanced functions: multi-instrument fleet management, trend charting (X-bar/R charts), CSV export with metadata (sample ID, operator, date/time, ambient temp/humidity), and PDF report generation compliant with internal SOP templates. Raw absorbance values and calculated PV results are stored with full audit trail—including parameter changes and calibration events—to support internal audits and regulatory review.
Applications
- Routine incoming inspection of crude and refined vegetable oil lots against supplier specifications
- Stability monitoring during storage (e.g., accelerated oxidation studies at 60 °C per AOCS Cd 12b–92)
- Validation of antioxidant efficacy (e.g., TBHQ, BHA, rosemary extract) in fortified oils
- Root cause analysis of off-flavor complaints linked to oxidative degradation
- Supporting shelf-life estimation models requiring early-stage oxidation markers
- Training platform for QC technicians due to standardized, low-skill workflow and visual feedback
FAQ
What is the measurement principle used by the GDYQ-2000S?
It employs a modified iodometric colorimetric method based on GB/T 5009.37–2003, where hydroperoxides oxidize iodide to iodine under acidic conditions; the liberated iodine is quantified spectrophotometrically.
Can the instrument be calibrated with NIST-traceable standards?
While the system uses KIO3-derived reference materials certified by China’s National Institute of Metrology (NIM), direct NIST SRM traceability requires third-party cross-validation; users should establish in-house correlation protocols.
Is the reagent kit compatible with other instruments?
No—the cartridges are mechanically and chemically designed exclusively for the GDYQ-2000S platform and are not interchangeable with generic iodometric kits.
Does the device meet international export requirements for food safety labs?
It satisfies functional requirements for PV testing under Codex, AOCS, and ISO 3960; CE marking is not applicable as it is classified as laboratory equipment—not medical or industrial machinery—under current EU directives.
How often does the optical system require verification?
Photometric accuracy should be verified quarterly using neutral density filters; full recalibration is recommended annually or after instrument relocation or impact event.
