Chuanyi CYWB-6 Environmental Protection Dedicated Microwave Digestion System
| Brand | Hangzhou Chuanyi Electronic |
|---|---|
| Origin | Zhejiang, China |
| Manufacturer Type | Manufacturer |
| Country of Origin | China |
| Model | CYWB-6 |
| Microwave Power Output | 0–1600 W (adjustable) |
| Max. Installed Power | 2600 W |
| Microwave Frequency | 2450 MHz |
| Temperature Control Range | Ambient to 300 °C |
| Temperature Accuracy | ±0.5 °C |
| Cavity Material | 52 L Stainless Steel |
| Outer Vessel Material | PEEK |
| Inner Vessel Material | PTFE |
| Inner Vessel Volume | 55 mL (standard), 100 mL (optional) |
| Max. Outer Vessel Pressure Rating | 20 MPa |
| Max. Inner Vessel Temperature Rating | 300 °C |
| Rotation | 360° continuous unidirectional |
| Safety Features | Auto-locking buffer anti-explosion door, dual-safety burst disc, non-contact pressure monitoring, contact-type platinum RTD temperature sensing, real-time T/P curve display |
Overview
The Chuanyi CYWB-6 Environmental Protection Dedicated Microwave Digestion System is a high-throughput, intelligent microwave-assisted sample preparation instrument engineered for trace elemental analysis in regulatory and research laboratories. It operates on the principle of microwave dielectric heating—where electromagnetic energy at 2450 MHz is selectively absorbed by polar molecules (e.g., HNO₃, HCl, HF) within sealed reaction vessels—generating rapid, volumetric, and uniform internal heating under controlled pressure and temperature conditions. Unlike conventional conductive heating methods (e.g., hot plates or block digesters), microwave digestion enables sub-minute thermal ramping, significantly reducing total digestion time by up to 80% while minimizing volatilization losses of analytes such as As, Hg, Se, and Pb. Designed specifically for environmental monitoring applications—including soil, sediment, sludge, water, and airborne particulate matter—the CYWB-6 complies with method requirements outlined in EPA Methods 3051A, 3052, and ASTM D5765, supporting full integration into GLP- and ISO/IEC 17025-compliant workflows.
Key Features
- Non-pulsed, frequency-variable microwave generation (0–100% power modulation) ensures stable energy delivery, extended magnetron lifetime, and improved field homogeneity across the 52 L stainless steel cavity.
- Auto-locking buffer anti-explosion door with lateral pressure release mechanism meets IEC 61000-4-3 EMC and GB 4706.21 safety standards; tested for structural integrity under overpressure events exceeding 20 MPa.
- Dual independent control system: Contact-based Pt100 RTD sensor for precise temperature measurement (±0.5 °C accuracy, ambient to 300 °C); non-contact pressure transducer for real-time pressure monitoring (0–15 MPa range, ±0.05 MPa repeatability).
- 360° continuous unidirectional rotation of the turntable eliminates “cold spots”, ensuring identical microwave exposure for all six sample positions and enhancing inter-sample reproducibility (RSD < 3% for certified reference materials).
- Integrated forced-air cooling system featuring acid-resistant centrifugal blower (≥5 m³/min airflow) and cavity-level air circulation maintains thermal stability during extended multi-step programs and prevents condensation on vessel lids.
- 7-inch capacitive touchscreen interface with graphical real-time T/P trajectory plotting, user-defined method storage (≥100 protocols), and password-protected administrator mode for audit-ready operation.
Sample Compatibility & Compliance
The CYWB-6 accommodates up to six 55 mL PTFE inner vessels housed in reinforced PEEK outer vessels rated to 20 MPa and 300 °C—compatible with aggressive acid mixtures including aqua regia, hydrofluoric acid (HF), and hydrogen peroxide. Vessels meet ISO 17034 material certification requirements for trace-metal-free construction and are validated for use with EPA SW-846 Method 3052 for silicate-rich matrices and ASTM D5765 for coal ash digestion. All hardware components—including cavity lining, gasket seals, and rotor assembly—are corrosion-resistant and compliant with RoHS Directive 2011/65/EU. The system supports full documentation traceability required under FDA 21 CFR Part 11 when paired with optional electronic signature and audit trail software modules.
Software & Data Management
Data acquisition and method execution are managed via an embedded Linux-based OS with timestamped logging of all critical parameters: microwave power profile, temperature ramp rate, pressure rise slope, hold duration, and cooling phase kinetics. Raw data exports in CSV and XML formats support direct import into LIMS platforms (e.g., LabWare, Thermo Fisher SampleManager) and statistical analysis tools (e.g., JMP, Minitab). Optional PC-based software provides advanced features including remote monitoring via Ethernet/Wi-Fi, automated report generation (PDF/Excel), electronic signature capture, and role-based access control aligned with ALCOA+ data integrity principles. Audit trails record all user actions—including parameter edits, method recalls, and emergency stops—with immutable timestamps and operator IDs.
Applications
The CYWB-6 serves as a primary sample preparation tool for accredited environmental testing laboratories performing heavy metal quantification (Cd, Cr, Cu, Ni, Pb, Zn, As, Hg) in accordance with ISO 11885, EN 13346, and China’s HJ 491–2019 standard methods. It is routinely deployed in municipal wastewater treatment plants for sludge metal speciation, in provincial environmental monitoring centers for soil contamination screening, and in third-party testing labs supporting REACH and RoHS compliance verification. Its robust design also supports QC/QA workflows in food safety (e.g., heavy metals in rice flour per GB 5009.12), clinical toxicology (blood/urine digestion prior to ICP-MS), and geological surveying (rock and ore digestion for XRF calibration).
FAQ
What safety certifications does the CYWB-6 hold?
The instrument conforms to GB 4706.21 (Chinese household and similar electrical appliances – safety requirements for microwave ovens), IEC 61000-4-3 (EMC immunity), and meets Class A radiation emission limits per GB 4343.1.
Can the CYWB-6 be used with hydrofluoric acid (HF)?
Yes—PTFE inner vessels and PEEK outer vessels are chemically resistant to HF at concentrations ≤5% v/v under recommended temperature/pressure profiles; users must follow strict PPE and fume hood protocols.
Is method validation support available?
Chuanyi provides application notes, CRM digestion protocols (e.g., NIST SRM 2710a, GBW 07401), and ICP-OES/ICP-MS compatibility reports upon request.
Does the system support remote diagnostics?
With optional Ethernet connectivity and licensed software, technicians can perform firmware updates, log review, and fault diagnosis without physical access.
How is calibration traceability maintained?
Temperature sensors are factory-calibrated against NIST-traceable references; users may perform field verification using certified thermocouple calibrators compliant with ISO/IEC 17025 Clause 6.5.
