Memmert UFB400 Forced-Convection Drying Oven
| Origin | Germany |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | UFB400 |
| Pricing | Available Upon Request |
Overview
The Memmert UFB400 Forced-Convection Drying Oven is an ISO 9001-certified, precision-engineered laboratory oven designed for reproducible thermal processing across research, quality control, and industrial validation environments. Built upon Memmert’s proprietary convection architecture, it employs a high-efficiency centrifugal fan with adjustable speed (0–100% in 10% increments) to ensure uniform airflow distribution—critical for applications demanding strict thermal homogeneity per DIN 12880 and ASTM E145. Unlike natural convection ovens, the UFB400 actively circulates heated air across the chamber via tangential airflow paths, minimizing temperature gradients and enabling rapid heat-up times and stable setpoint maintenance. Its operating range spans from ambient +5 °C (minimum 30 °C) to 220 °C standard or optionally up to 300 °C—making it suitable for drying, sterilization validation, accelerated aging, moisture loss analysis, and pre-conditioning of polymeric or pharmaceutical samples under GLP/GMP-aligned workflows.
Key Features
- Chamber constructed entirely from electropolished, corrosion-resistant 1.4301 stainless steel (equivalent to ASTM A240/A276 Type 304), deep-drawn for structural integrity and zero weld seams—ensuring long-term chemical resistance and cleanability.
- Robust external casing: stainless steel front and top; zinc-coated steel rear panel for electromagnetic shielding and mechanical stability.
- Four sliding stainless-steel shelves (standard), each rated for 30 kg load; total chamber load capacity: 90 kg.
- Electronic PID temperature controller with integrated self-diagnostic algorithms and fuzzy logic adaptation for dynamic load compensation.
- Dual Pt100 Class A sensors (4-wire configuration): one for primary control, one for redundant monitoring with automatic failover—meeting IEC 61508 SIL 2 functional safety principles for critical thermal processes.
- Triple-stage overtemperature protection: mechanical limiter (TB Class 1), electronic cut-off at +10 °C above setpoint (U/S variant) or +3 °C (I variant), and microprocessor-based deviation alarm with ASF (Automatic Setpoint Following) function.
- Real-time digital display (8-digit alphanumeric) showing setpoint, actual temperature, elapsed/remaining time, error codes, and active program segment.
- Integrated 1024 kB circular memory log: stores timestamped temperature readings, setpoints, fan speed, damper position, alarms, and system events at user-selectable intervals (1 min default)—retaining ~6 months of data.
Sample Compatibility & Compliance
The UFB400 accommodates diverse sample formats—including Petri dishes, glassware, metal trays, polymer test coupons, and coated substrates—within its 53 L internal volume (400 × 400 × 330 mm W×H×D). Its forced-air design supports consistent drying kinetics for hygroscopic materials (e.g., APIs, excipients, ceramics) and avoids surface case-hardening common in static ovens. The unit complies with EN 61010-1 (safety), EN 61326-1 (EMC), and meets requirements for use in laboratories adhering to ISO/IEC 17025, USP , and FDA 21 CFR Part 11 when paired with Celsius 2007 software and audit-trail-enabled configurations. Optional STERI chip cards enable validated 160 °C dry-heat sterilization cycles per EN 554, supporting microbiological lab equipment conditioning.
Software & Data Management
The included Celsius 2007 software (Windows-compatible, free download) enables full remote programming, real-time monitoring, and export of CSV/Excel-compatible logs. Users define multi-segment ramp-soak-cool profiles with independent control of temperature, fan speed, and fresh-air damper position—up to 40 segments per program (expandable via XL memory card). The software supports electronic signatures, user access levels (admin/operator), and generates 21 CFR Part 11-compliant audit trails including operator ID, timestamp, parameter changes, and system events. Parallel printer interface (PCL3-compatible) allows direct hardcopy output of calibration certificates and run reports. All firmware updates and diagnostic tools are accessible via Memmert’s secure support portal.
Applications
- Moisture content determination (ASTM D229, ISO 712) in food, feed, and pharmaceutical raw materials.
- Accelerated stability testing per ICH Q1A(R3) guidelines at controlled temperatures (e.g., 40 °C/75% RH preconditioning).
- Drying of filter papers, chromatography plates, and gravimetric crucibles prior to weighing.
- Thermal aging of elastomers, adhesives, and packaging films per ASTM D573 and ISO 188.
- Pre-heating and post-curing of composite specimens in materials science labs.
- Residual solvent removal from coated medical devices prior to biocompatibility testing (ISO 10993-12).
- Validation of dry-heat sterilization cycles for stainless-steel tools and glass vials.
FAQ
What is the temperature uniformity specification at 150 °C?
Per DIN 12880, the UFB400 achieves ≤ ±2.7 °C spatial uniformity across the working volume at 150 °C (U/S configuration).
Does the oven support GLP-compliant data archiving?
Yes—when used with Celsius 2007 software, it provides electronic signatures, role-based access control, immutable audit trails, and encrypted data export meeting ALCOA+ principles.
Can the fresh-air intake be automated?
Standard models feature manually adjustable dampers; P-series variants include servo-controlled damper actuation synchronized with temperature ramps.
Is calibration traceability available?
Each unit ships with a factory-issued single-point calibration certificate (center-point, 160 °C for U/S or 37 °C for I variant), traceable to national standards (DKD/DAkkS-accredited labs).
What power supply options are supported?
Standard configuration: 230 V ±10%, 50/60 Hz, 1400 W max. Custom voltages (e.g., 115 V, 400 V three-phase) available on request with corresponding CE/UL certification updates.
