Memmert VO200/VO400/VO500 Vacuum Drying Oven

Overview

The Memmert VO200, VO400, and VO500 Vacuum Drying Ovens are precision-engineered laboratory instruments designed for controlled thermal processing under reduced pressure. Based on the principle of vacuum-assisted evaporation—where lowering ambient pressure reduces the boiling point of solvents and moisture—the VO series enables gentle, residue-free drying of thermolabile, oxidation-sensitive, or hygroscopic samples without structural degradation or surface oxidation. Unlike conventional convection ovens, these units eliminate convective heat transfer and rely instead on direct conductive heating via aluminum shelves equipped with integrated PTC elements and calibrated 4-wire Pt100 sensors. This architecture ensures rapid thermal response, minimal thermal inertia, and high reproducibility across repeated cycles. All models comply with DIN 12880:2007-05 for temperature uniformity and stability testing, and are certified to EN 61010-1 for electrical safety in laboratory environments.

Key Features

• Digitally controlled vacuum regulation (5–1100 mbar) with programmable setpoints per process stage—Memmert is the only manufacturer offering factory-integrated digital pressure controllers as standard.
• Individually heated aluminum shelves (ASTM B209) with dedicated 4-wire Pt100 sensors and independent PID control loops—enabling precise thermal management regardless of load distribution or moisture content.
• Up to 40-stage programmable cycle control directly from the front panel; unlimited-stage programming and remote operation via Celsius software (Windows-compatible, free download).
• Integrated inert gas module (optional) for programmable nitrogen or argon purging—reducing oxygen exposure during cooling or storage phases.
• Pump control module (optional) synchronizes vacuum pump activation/deactivation with process stages, minimizing energy consumption and extending pump service life.
• Triple-layer overtemperature protection: microprocessor-based MLOP (Multi-Level Overtemperature Protection), mechanical temperature limiter (TB), and ASF (Automatic Setpoint Linkage) function ensuring fail-safe shutdown if deviation exceeds defined thresholds.
• ESG laminated safety glass door with spring-loaded internal pane and splash-resistant external screen—meets EN 12150-1 impact resistance standards.
• 1024 KB internal memory stores timestamped process data (setpoint, actual value, alarms, errors) at 1-minute intervals—supporting GLP-compliant traceability for up to three months.

Sample Compatibility & Compliance

The VO series accommodates a broad spectrum of sample types including pharmaceutical active ingredients (APIs), polymer films, ceramic precursors, lyophilized biologicals, and nanomaterial dispersions. Its low-leakage design (<0.01 bar/h) and high-fidelity vacuum control make it suitable for applications requiring strict atmospheric exclusion—such as moisture content determination per ISO 712, residual solvent analysis per USP , or pre-weighing stabilization per ASTM E1233. All units are CE-marked and conform to IEC 61000-6-3 (EMC immunity), EN 61010-1 (safety), and DIN 12880:2007-05 (performance verification). Optional Celsius software configurations support 21 CFR Part 11 compliance—including electronic signatures, audit trails, and role-based access control—for regulated QC/QA laboratories operating under GMP or GLP frameworks.

Software & Data Management

Celsius software serves as the central interface for configuration, monitoring, and documentation. It provides real-time graphical visualization of temperature and pressure profiles, synchronized alarm logging, and export functionality in CSV, PDF, or XML formats. The software supports automated report generation with embedded metadata (operator ID, instrument serial number, calibration status). Internal memory retains full-cycle data—including deviations, fault codes, and environmental timestamps—with configurable sampling intervals (1–60 minutes). For regulatory environments, optional validation packages include IQ/OQ documentation templates, test protocols, and traceable calibration certificates issued per ISO/IEC 17025-accredited procedures.

Applications

• Pharmaceutical stability studies requiring inert-atmosphere drying prior to HPLC or Karl Fischer titration.
• Preparation of anhydrous catalysts and battery electrode materials where trace moisture compromises electrochemical performance.
• Drying of thin-film coatings (e.g., spin-coated perovskites or organic semiconductors) without thermal cracking or dewetting.
• Moisture loss-on-drying (LOD) analysis compliant with pharmacopeial methods (USP , Ph. Eur. 2.2.32).
• Accelerated aging tests for polymers and composites under controlled vacuum-thermal stress.
• Post-synthesis solvent removal from metal–organic frameworks (MOFs) and covalent organic frameworks (COFs) while preserving porosity.

FAQ

What vacuum level can the VO series achieve?
The system achieves a minimum base pressure of 0.01 mbar when paired with an optional high-vacuum pump module. Standard operation spans 5–1100 mbar with digital pressure regulation.
Is calibration traceable to national standards?
Yes—each unit ships with a factory-issued working calibration certificate (performed at +160 °C / 50 mbar, center-of-shelf), and individual shelf certificates are available upon request. NIST-traceable recalibration services are offered globally.
Can the oven be integrated into a LIMS or MES environment?
Via Celsius software’s OPC UA and TCP/IP interfaces, the VO series supports bidirectional communication with laboratory information management systems and manufacturing execution systems—enabling automated data ingestion and workflow synchronization.
Are replacement shelves and seals available as spare parts?
All consumables—including aluminum heating shelves, silicone door gaskets, and stainless-steel interior brackets—are stocked globally and supplied with OEM part numbers for unambiguous reordering.
Does Memmert provide installation qualification (IQ) support?
Yes—Memmert offers factory-trained field service engineers who perform on-site IQ/OQ/PQ validation in accordance with ISO 13485 and GAMP5 guidelines, including documentation review and signature approval.