Thermo Scientific Heratherm Large-Capacity High-End Forced-Air Drying Oven
| Brand | Thermo Fisher Scientific |
|---|---|
| Origin | USA |
| Manufacturer | Thermo Fisher Scientific |
| Product Category | Imported Laboratory Equipment |
| Model | Heratherm Large-Capacity High-End |
| Pricing | Available Upon Request |
| Convection Type | Mechanical (Forced-Air) |
| Temperature Range | +50–250°C (OMH400/OMH750) / +50–300°C (OMH750-3P) |
| Temperature Uniformity (at 150°C) | ±2.1°C (OMH400) / ±3.1°C (OMH750 & OMH750-3P) |
| Temperature Stability (at 150°C) | ±0.3°C (OMH400) / ±0.4°C (OMH750 & OMH750-3P) |
| Chamber Volume | 396 L (OMH400) / 731 L (OMH750 & OMH750-3P) |
| Chamber Dimensions (W×H×D) | 544×1335×545 mm (OMH400) / 1004×1335×545 mm (OMH750 & OMH750-3P) |
| External Dimensions (W×H×D) | 778×1545×770 mm (OMH400) / 1261×1545×770 mm (OMH750 & OMH750-3P) |
| Standard/Maximum Shelves | 2/39 |
| Max Shelf Load | 55 kg per shelf |
| Power Supply | 230 V, 50 Hz |
| Power Rating | 2400 W (OMH400) / 3000 W (OMH750) / 5750 W (OMH750-3P) |
| Net Weight | 135 kg (OMH400) / 185 kg (OMH750 & OMH750-3P) |
| Fan Speed Control | Electronically Adjustable (Dual-Speed) |
| Programmable Controller | 10 Programs × 10 Steps |
| Data Monitoring Port | Yes (External Sensor Interface) |
| Construction | Optional Stainless Steel Exterior (SS variants) with Rounded Corners |
| Safety Features | Audible Door-Open Alarm, Lockable Casters |
Overview
The Thermo Scientific Heratherm Large-Capacity High-End Forced-Air Drying Oven is an engineered solution for laboratories requiring precise, reproducible thermal processing across demanding applications—including pharmaceutical stability testing, materials drying, moisture content analysis, sterilization validation support, and routine sample conditioning. Designed and manufactured in the United States by Thermo Fisher Scientific, this series employs robust mechanical convection to ensure rapid heat transfer and high spatial temperature uniformity within large-volume chambers. Unlike natural convection ovens, the Heratherm’s electronically controlled dual-speed fan system actively circulates heated air across adjustable baffles—enabling dynamic optimization of airflow velocity and direction for each stage of a multi-step thermal protocol. The OMH750-3P variant extends operational capability to 300°C, meeting requirements for high-temperature gravimetric analysis and polymer curing validation under ASTM E145 and ISO 17025-compliant environments.
Key Features
- Electronically regulated dual-speed forced-air circulation—high speed for accelerated heating/drying; low speed for delicate samples or low-turbulence protocols
- Programmable controller supporting up to 10 independent programs, each with up to 10 user-defined steps (ramp, hold, cooling)
- Real-time temperature monitoring via external sensor port—enables independent data logging compliant with FDA 21 CFR Part 11 when paired with validated software
- Audible door-open alarm enhances procedural integrity during GLP/GMP workflows
- Rounded-corner stainless steel exterior (optional SS models: OMH400-SS, OMH750-SS) facilitates cleaning and meets USP environmental hygiene standards for compounding labs
- Lockable heavy-duty casters enable stable repositioning within shared laboratory spaces without compromising vibration-sensitive operations
- Intuitive front-panel interface with clear LED display and tactile navigation—designed for glove-compatible operation in cleanroom or containment settings
Sample Compatibility & Compliance
The Heratherm series accommodates diverse sample formats—including stacked trays, stacked glassware, bulk powder containers, and sealed stability chambers—within its spacious 396 L to 731 L internal volume. All models meet IEC 61010-1 safety standards for laboratory electrical equipment. The OMH750-3P variant complies with ASTM D1505 (density of plastics), ASTM D2240 (Shore hardness), and ISO 293 for hot-press molding pre-conditioning. Stainless steel variants satisfy EU Annex 1 requirements for non-shedding surfaces in aseptic processing environments. Temperature uniformity and stability specifications are verified per ISO 17025-accredited calibration procedures traceable to NIST standards.
Software & Data Management
While the Heratherm operates as a standalone instrument, its analog sensor output port (0–10 V or 4–20 mA configurable) supports integration into centralized laboratory data acquisition systems (e.g., LabVIEW, DeltaV, or Thermo Fisher’s SampleManager LIMS). When connected to a validated third-party data logger, the oven satisfies audit-trail and electronic signature requirements under 21 CFR Part 11 for regulated QC/QA environments. Firmware updates are delivered via USB interface, ensuring long-term compliance with evolving cybersecurity and data integrity expectations in GxP-regulated facilities.
Applications
- Pharmaceutical stability studies (ICH Q1A–Q1E) requiring controlled, uniform thermal exposure over extended durations
- Moisture loss-on-drying (LOD) assays per USP <<731> and EP 2.2.32
- Polymer and composite material pre-conditioning prior to tensile, impact, or rheological testing
- Residual solvent removal from coated medical devices under ISO 10993-12
- Bulk drying of chromatography media, catalysts, and ceramic precursors in R&D and pilot-scale manufacturing
- Pre-heating and holding of calibration standards for thermogravimetric analyzers (TGA) and differential scanning calorimeters (DSC)
FAQ
What is the maximum operating temperature for each Heratherm model?
The OMH400 and OMH750 operate up to 250°C; the OMH750-3P is rated for continuous operation at 300°C.
Can the oven be calibrated internally, or is external verification required?
Internal calibration is not supported; periodic verification using NIST-traceable Class A PT100 probes is recommended per ISO/IEC 17025 and manufacturer guidelines.
Are shelf configurations customizable beyond the standard 2–39 range?
Yes—custom perforated or solid shelves, wire mesh inserts, and reinforced load-bearing platforms are available as factory-installed options.
Does the Heratherm comply with energy efficiency directives such as EU ErP?
All models meet EU ErP Lot 11 (2015/1188) requirements for laboratory ovens, with power consumption optimized via intelligent fan modulation and insulation design.
Is remote monitoring possible without additional hardware?
No—remote access requires integration via the analog sensor port and a compatible SCADA or LIMS gateway; no built-in Ethernet or Wi-Fi module is included.
