PreeKem Yitao U2 Pressurized High-Throughput Microwave Reaction System

Overview

The PreeKem Yitao U2 Pressurized High-Throughput Microwave Reaction System is an industrial-grade microwave digestion and synthesis platform engineered for precision, reproducibility, and regulatory compliance in analytical laboratories. It operates on controlled microwave energy absorption within a pressurized, sealed reaction environment—enabling rapid, uniform heating of multiple samples simultaneously via dielectric heating mechanisms. Unlike open-vessel or single-sample systems, the U2 leverages a large-volume, high-strength cavity designed to sustain continuous operation at up to 200 bar and 300 °C, making it suitable for demanding applications including EPA Method 3052, ISO 15587-1, and ASTM D5511 digestion protocols. Its architecture integrates real-time thermodynamic feedback control—critical for maintaining stoichiometric integrity during acid digestion, catalyst synthesis, or hydrothermal material preparation.

Key Features

• Industrial-class microwave cavity with reinforced stainless-steel construction and active cooling—rated for sustained operation under 200 bar internal pressure and ambient temperature stability ≤±0.5 °C.
• High-throughput sample handling: accommodates up to 82 vessels (standard 55 mL quartz or TFMP-lined PTFE vessels) in a single run, minimizing batch-to-batch variability and maximizing laboratory throughput.
• Fully automated mechanical workflow: motorized lift-and-lock sample rack, pneumatically actuated sealing lid, and integrated post-digestion forced-air purge system eliminate manual intervention during loading, pressurization, cooling, and venting phases.
• Pt100 RTD-based temperature sensing with dual-point calibration traceability; real-time cavity temperature monitoring across 0–350 °C range with ±0.1 °C accuracy per IEC 60751 Class A specification.
• Direct-contact piezoresistive pressure transducer mounted inside cavity wall; records full pressure-time profiles with 0.1 bar resolution and <50 ms response time.
• Integrated 10-inch capacitive touchscreen HMI with embedded Linux OS; supports local data storage (≥10,000 method records), timestamped audit trails, and USB export of CSV/Excel-compatible datasets.

Sample Compatibility & Compliance

The U2 supports standard digestion vessels compliant with ISO 17025-accredited lab practices—including quartz, high-purity PTFE-TFM, and reinforced composite materials rated for ≥300 °C and ≥200 bar. Vessel configurations accommodate solid, semi-solid, and liquid matrices ranging from soil and biological tissue to polymers and geological samples. The system conforms to key international safety and performance standards: IEC 61000-6-3 (EMC), IEC 61000-6-4 (emissions), and EN 61010-1 (electrical safety). All pressure containment components are ASME BPVC Section VIII Division 1 certified. For regulated environments, the U2 meets GLP/GMP documentation requirements and aligns with FDA 21 CFR Part 11 for electronic records and signatures—including four-tier user access control (Administrator, Supervisor, Technician, Viewer), password complexity enforcement, and immutable event logging.

Software & Data Management

The U2’s embedded software suite provides method-driven operation with over 50 pre-validated application templates covering EPA, ISO, and ASTM digestion standards (e.g., heavy metals in wastewater, total phosphorus in sludge, rare earth elements in ores). Each method stores full parameter sets—ramp rate, hold time, power profile, pressure limits—and links directly to instrument calibration certificates. Data export supports CSV, PDF report generation, and direct integration with LIMS via secure FTP or OPC UA protocol. Audit trail logs capture operator ID, timestamp, parameter changes, and system alarms with SHA-256 hashing for tamper-evident integrity verification. Remote access is enabled via TLS 1.2-secured web interface compatible with desktop browsers and iOS/Android mobile clients.

Applications

• Environmental analysis: multi-element digestion of soils, sediments, and airborne particulates per EPA Methods 3050B, 3051A, and 3052.
• Clinical and pharmaceutical QC: residual catalyst quantification in API intermediates, leachable metal testing in medical device packaging (ISO 10993-12).
• Materials science: controlled hydrothermal synthesis of MOFs, perovskites, and nanocatalysts under inert or reducing atmospheres.
• Food safety: total arsenic, lead, and cadmium determination in fortified cereals and infant formula following AOAC 2013.06.
• Geochemical research: silicate rock dissolution using HF-HNO₃-HCl mixtures with real-time pressure suppression logic to prevent vessel rupture.

FAQ

What safety certifications does the U2 hold for use in accredited laboratories?

The system carries CE marking per Machinery Directive 2006/42/EC and EMC Directive 2014/30/EU, and its pressure vessel assembly is certified to ASME BPVC Section VIII Div. 1. Full test reports are available upon request for ISO/IEC 17025 accreditation submissions.
Can the U2 be integrated into an existing LIMS infrastructure?

Yes—via configurable FTP server push, RESTful API endpoints (authentication via OAuth 2.0), or OPC UA client mode for bidirectional data exchange with major LIMS platforms including LabWare, STARLIMS, and Thermo Fisher SampleManager.
Is method validation support provided for regulatory submissions?

PreeKem offers IQ/OQ documentation packages, vendor-led installation qualification, and on-site operational qualification support—including recovery studies, spike linearity, and robustness testing aligned with ICH Q2(R2) guidelines.
How is temperature uniformity verified across the 82-position rotor?

Temperature homogeneity is validated using NIST-traceable fiber-optic probes placed at radial extremes and center positions during factory acceptance testing; typical deviation is ≤±1.2 °C at 250 °C steady state.
Does the system support inert gas purging for oxygen-sensitive reactions?

Optional integrated mass flow controller (MFC) module enables programmable argon or nitrogen purge sequences prior to and during microwave irradiation, with pressure-compensated gas dosing up to 5 bar backpressure.