SkyRay EDX 3200S PLUS C Food-Specific Energy Dispersive X-Ray Fluorescence Spectrometer

Overview

The SkyRay EDX 3200S PLUS C is a purpose-built, food-grade energy dispersive X-ray fluorescence (EDXRF) spectrometer engineered for rapid, non-destructive screening and quantitative analysis of toxic heavy metals in agricultural commodities and processed food matrices. Operating on the fundamental principle of X-ray fluorescence—where primary X-rays excite inner-shell electrons in sample atoms, inducing characteristic secondary (fluorescent) X-ray emission—the instrument delivers elemental identification and concentration determination without chemical digestion, solvent use, or thermal equilibration. Its optimized optical path, high-efficiency FAST-SDD detector, and proprietary signal-to-noise enhancement technology collectively enable sub-ppm detection limits for regulated elements including Cd, Pb, As, Cr, and Se in cereals (rice, wheat, corn), milled products (rice flour, noodles), tea, herbal medicines, and tobacco. Designed for compliance with national and international food safety monitoring frameworks—including China’s GB 2762–2022, EU Commission Regulation (EU) No 2023/915, and Codex Alimentarius standards—the EDX 3200S PLUS C supports both field-deployable and laboratory-based workflows, with full traceability and audit readiness.

Key Features

• Integrated 24-position automated sample changer: Enables unattended sequential analysis of bulk grain or powdered samples; modular design allows detachment for portable or vehicle-mounted deployment.
• Patented triple-layer X-ray shielding system: Compliant with IEC 61000-6-3 and GBZ 126–2011 radiation safety requirements; certified by national regulatory authorities with valid Radiation Safety License.
• Touchscreen all-in-one architecture: Embedded industrial PC with intuitive GUI eliminates external computing hardware; dual-mode operation (Screening Mode / Quantitative Mode) with role-based access control (Administrator vs. Operator).
• Optimized excitation source: High-stability, high-power imported X-ray tube ensures consistent photon flux and improved peak-to-background ratio—critical for low-concentration As and Cd quantification in high-matrix grains.
• Smart sample handling: Threaded, one-piece polypropylene sample cup with hermetic seal; reusable, membrane-free design; infrared position sensing in sample chamber guarantees correct placement before measurement initiation.
• Real-time safety interlock: Acoustic-optical warning system + physical shutter lock activated during irradiation; hardware-level permission lock prevents unauthorized operation even if software fails.
• No consumables or reagents: Eliminates acid digestion, argon purge, or calibration film replacement—reducing operational cost, waste generation, and environmental footprint per test.

Sample Compatibility & Compliance

The EDX 3200S PLUS C accommodates heterogeneous solid samples up to 60 mm diameter and 30 mm height—including whole grains, ground flours, dried leaves, and compressed pellets—without homogenization or dilution. Its open-access sample chamber permits mid-run sample replacement, supporting adaptive batch processing. Method validation data confirm performance against GB/T 33038–2016 (determination of Cd in rice), GB/T 33039–2016 (Pb in wheat), and GB/T 33040–2016 (total As in maize). The system meets GLP-aligned documentation requirements: full electronic audit trail, user authentication logs, method version control, and raw spectrum archiving. It is compatible with ISO/IEC 17025–2017 quality management systems when deployed in accredited food testing laboratories.

Software & Data Management

SkyRay FoodScan™ v4.2 software provides FDA 21 CFR Part 11–compliant data integrity features: electronic signatures, immutable result records, automatic timestamping, and configurable retention policies. Quantitative analysis employs fundamental parameter (FP) algorithms with matrix-matched calibration curves derived from NIST-traceable reference materials (e.g., SRM 1568b Rice Flour, SRM 2711a Montana Soil). Results display color-coded alerts (green = below limit, yellow = near limit, red =超标) aligned with regional MRLs. All spectra, calibration files, and QA/QC reports export in ASTM E1358–22–compatible .csv and .spc formats. Remote diagnostics and firmware updates are supported via encrypted TLS 1.3 connection.

Applications

• Rapid pre-screening of paddy rice at grain procurement stations to identify Cd-contaminated lots prior to milling.
• Quantitative verification of Pb and total As in wheat flour batches for compliance with EU maximum levels (Regulation (EC) No 1881/2006).
• Multi-element profiling (Cd, Cr, Se) in specialty teas and traditional Chinese medicinal herbs to support export certification.
• On-site verification of heavy metal clearance in post-harvest maize stored under varying humidity conditions.
• Validation of remediation efficacy in agronomic trials involving soil amendments or phytoremediation crops.

FAQ

Does the EDX 3200S PLUS C require sample digestion or acid treatment before analysis?
No. It performs direct solid-sample analysis using non-destructive EDXRF, eliminating wet chemistry steps.
Can the instrument differentiate between organic and inorganic arsenic species?
No. As speciation requires hyphenated techniques (e.g., HPLC-ICP-MS); this instrument reports total arsenic content only.
Is the 24-position auto-sampler compatible with irregularly shaped samples like tea leaves or whole grains?
Yes—customizable cup adapters and programmable Z-axis height compensation ensure uniform geometry and reproducible excitation geometry.
How is data integrity ensured during regulatory audits?
Through built-in 21 CFR Part 11 functionality: role-based permissions, electronic signatures, tamper-evident audit logs, and secure database encryption.
What maintenance is required for long-term stability?
Annual calibration verification using certified reference materials; detector vacuum integrity check; no routine lamp or filament replacement needed due to solid-state X-ray source design.