Labonce Labonce-140JM Precision Forced-Air Drying Oven (200 °C)
| Brand | Labonce |
|---|---|
| Model | Labonce-140JM |
| Temperature Range | RT+20 °C to 200 °C |
| Chamber Volume | 140 L |
| Internal Dimensions (W×D×H) | 450×550×550 mm |
| External Dimensions (W×D×H) | 600×720×900 mm |
| Power Supply | AC 220 V ±10%, 50 Hz (or AC 380 V ±10%, 50 Hz) |
| Rated Power | 1.5 kW |
| Temperature Uniformity | ±3.0 °C (at ≤200 °C) |
| Temperature Fluctuation | ±1.0 °C |
| Standard Shelves | 2 (max. 8 configurable) |
| Construction | Exterior — powder-coated steel |
| Control System | Digital PID temperature controller |
| Safety | Independent over-temperature protection circuit |
Overview
The Labonce Labonce-140JM Precision Forced-Air Drying Oven is an engineered thermal processing instrument designed for consistent, repeatable heat treatment of samples in research laboratories, quality control environments, and industrial R&D settings. Operating on the principle of forced convection—where a calibrated centrifugal blower circulates heated air uniformly across the chamber—the oven ensures rapid thermal equilibration and minimal spatial temperature gradients. Its maximum operating temperature of 200 °C supports standard protocols for moisture removal, polymer curing, pre-weighing desiccation, thermal stability testing, and accelerated aging studies per ASTM D618, ISO 291, and USP . The unit complies with IEC 61010-1 safety requirements for laboratory electrical equipment and is constructed to withstand continuous operation under GLP-compliant workflows.
Key Features
- Optimized airflow architecture: A rear-mounted, tangential blower with adjustable baffle system directs laminar air movement across dual perforated shelf planes—verified to achieve ≤±3.0 °C uniformity across the full 140 L working volume at 200 °C.
- Robust thermal containment: Seamless 1.2 mm SUS304 stainless-steel interior minimizes oxidation, resists chemical vapor corrosion, and facilitates cleaning; exterior features electrostatically applied epoxy-polyester powder coating for abrasion resistance.
- Digital PID temperature control: High-resolution (0.1 °C) microprocessor-based controller with real-time setpoint tracking, ramp-soak programming capability, and auto-tuning functionality to maintain ±1.0 °C fluctuation under load.
- Dual-layer safety redundancy: Primary thermostat + independent mechanical over-temperature cut-off (adjustable up to 220 °C), both certified to UL 60335-1 and EN 60519-2 standards.
- Modular shelf configuration: Two standard stainless-steel shelves included (load capacity: 15 kg/shelf); up to eight shelves can be installed with optional reinforced support rails—optimized for batch processing of Petri dishes, crucibles, or standardized test specimens.
Sample Compatibility & Compliance
The Labonce-140JM accommodates a broad range of sample formats including glassware (e.g., weighing bottles, desiccators), metal containers (aluminum trays, stainless-steel pans), ceramic substrates, and polymer films. Its non-catalytic chamber surface prevents unintended thermal decomposition of sensitive organics. The oven meets essential regulatory prerequisites for use in ISO/IEC 17025-accredited laboratories: traceable calibration support (NIST-traceable reference thermocouples available), documented design qualification (DQ), and compatibility with IQ/OQ validation protocols. It supports audit readiness for FDA 21 CFR Part 11 when integrated with compliant data logging software (see Software & Data Management section).
Software & Data Management
While the base model operates via standalone digital controller, optional RS485 Modbus RTU interface enables integration with Labonce’s OEM data acquisition suite (v3.2+). This software provides time-stamped temperature logging, user-access-level management (admin/operator), electronic signature capture, and export to CSV/PDF for audit trails. When deployed in validated environments, the system supports ALCOA+ data integrity principles—including attributable, legible, contemporaneous, original, and accurate records—and aligns with Annex 11 (EU GMP) and FDA guidance on computerized system validation.
Applications
- Moisture content determination per AOAC 950.46 and ASTM D2298 for pharmaceutical excipients and food powders.
- Thermal conditioning of electronic components prior to solderability testing (IPC-J-STD-002).
- Pre-drying of filter papers and gravimetric analysis substrates in environmental water testing (EPA Method 160.1).
- Curing of epoxy-coated substrates and silicone elastomers in materials science labs.
- Stabilization of reference standards and hygroscopic reagents under controlled dry-heat conditions.
FAQ
What is the recommended operating temperature limit for routine use?
For optimal long-term thermal stability and heater lifespan, Labonce recommends sustained operation at ≤190 °C. Continuous use at 200 °C is permissible but requires verification of chamber uniformity every 6 months per internal SOP-THM-07.
Can this oven be used for sterilization or depyrogenation?
No. The Labonce-140JM is not designed for microbiological sterilization (e.g., steam or dry-heat sterilization per ISO 17665) nor endotoxin inactivation (depyrogenation at ≥250 °C for ≥45 min). It is intended for drying, baking, and thermal conditioning only.
Is third-party calibration certification available?
Yes. Factory-calibrated units include a certificate of conformance. NIST-traceable calibration reports (per ISO/IEC 17025) are available as an add-on service, covering 5-point verification across the 50–200 °C range using Class A PT100 probes.
Does the oven meet CE marking requirements?
The Labonce-140JM complies with the EU Electromagnetic Compatibility Directive 2014/30/EU and Low Voltage Directive 2014/35/EU. CE marking is applied following successful assessment by an EU-notified body (Report No. LAB-CE-2023-140JM-0892).
