Thermo Scientific Heratherm OGS60 General-Purpose Drying Oven

Overview

The Thermo Scientific Heratherm OGS60 General-Purpose Drying Oven is an engineered solution for routine laboratory heating, drying, sterilization, and conditioning applications requiring stable thermal environments without forced air circulation. Designed around natural convection principles, the OGS60 eliminates fan-induced turbulence and particle redistribution—making it particularly suitable for heat-sensitive samples, powder drying, moisture loss determination (e.g., ASTM D2240, ISO 293), and pre-conditioning of packaging materials or polymer specimens prior to mechanical testing. Its chamber maintains a nominal temperature stability of ±0.4 °C at 150 °C over extended periods, with uniformity across the working volume specified at ±4 °C under steady-state conditions. The stainless steel 1.4016 interior—electropolished and featuring radius-rounded corners—ensures corrosion resistance against mild organic solvents and aqueous residues while facilitating GLP-compliant cleaning validation.

Key Features

• Natural convection architecture minimizes sample disturbance and cross-contamination risk—ideal for gravimetric moisture analysis and low-dust environments.
• Microprocessor-based control system with vacuum fluorescent display (VFD) offering real-time setpoint, actual temperature, and timer status in high-contrast readability.
• 180° hinge-mounted door enables unobstructed access to full chamber depth; ergonomic handle design reduces operator fatigue during frequent loading/unloading cycles.
• Independent external sensor port integrated into exhaust duct allows connection of calibrated PT100 or thermocouple probes for third-party data logging or audit trail generation.
• RS232 serial interface supports bidirectional communication with LIMS or SCADA systems for automated parameter logging, event timestamping, and remote monitoring (compatible with Thermo Fisher’s DryBlock™ software suite).
• Auto-overtemperature cut-off with independent mechanical safety thermostat prevents thermal runaway and safeguards both samples and chamber integrity.
• Energy-optimized insulation and low-thermal-mass chamber walls reduce power consumption by up to 22% compared to legacy forced-air equivalents operating at equivalent setpoints.
• Modular shelf system accommodates up to 13 adjustable stainless steel trays (2 supplied); each rated for 25 kg static load—validated per EN 61000-6-3 for electromagnetic compatibility in shared lab infrastructure.

Sample Compatibility & Compliance

The OGS60 supports a broad range of non-volatile and semi-volatile sample types including pharmaceutical excipients (per USP ), ceramic green bodies, filter papers, soil aggregates, textile swatches, and metal oxide precursors. Its stainless steel 1.4016 chamber complies with EN 10088-1 for food-contact-grade corrosion resistance and meets IEC 61010-1:2010 safety requirements for laboratory electrical equipment. For regulated environments, the unit supports 21 CFR Part 11-compliant electronic records when paired with validated data acquisition software—enabling audit-ready temperature profiles, user authentication logs, and change-control documentation. It is routinely deployed in ISO/IEC 17025-accredited testing labs performing drying loss (LOI), ash content (ASTM E1755), and residual solvent analysis (ICH Q2(R2)).

Software & Data Management

Standard RS232 connectivity enables integration with Thermo Fisher’s optional DryBlock™ Data Logger software, which provides configurable sampling intervals (1–300 seconds), automatic CSV export, trend visualization, and alarm-triggered snapshot capture. All temperature events—including door openings, setpoint changes, and overtemperature interventions—are time-stamped with millisecond resolution and stored locally on host PC storage. The system supports digital signature workflows and user role-based access (Administrator, Operator, Reviewer) to satisfy ALCOA+ data integrity principles. Raw serial output is ASCII-formatted and parseable by Python, LabVIEW, or custom MES platforms using standard Modbus RTU framing conventions.

Applications

• Moisture content determination in raw materials (pharmaceuticals, foodstuffs, polymers)
• Drying of glassware and precision components prior to calibration or weighing
• Pre-heating of test specimens for tensile, impact, or hardness testing (ASTM D638, ISO 527)
• Conditioning of hygroscopic standards and reference materials per ISO 17034
• Stabilization of electronic assemblies before environmental stress screening
• Low-temperature curing of adhesives and coatings where airflow-induced surface defects must be avoided

FAQ

Is the OGS60 suitable for GMP-regulated environments?
Yes—the unit supports IQ/OQ documentation packages, has traceable calibration paths via NIST-traceable reference sensors, and enables 21 CFR Part 11-compliant data handling when used with validated software configurations.
Can external temperature probes be connected without modifying the oven?
Yes—via the dedicated exhaust-port sensor interface, which accepts industry-standard PT100 (2-/3-/4-wire) and Type K thermocouples without internal hardware modification.
What is the maximum number of shelves that can be installed simultaneously?
Thirteen (13) stainless steel shelves may be installed; however, thermal uniformity specifications are guaranteed only when using the standard two-shelf configuration per EN 61326-1 Annex A.
Does the OGS60 support programmable ramp/soak cycles?
No—the microprocessor controller supports only single-setpoint operation with on/off timer functions; multi-stage profiles require external programmable logic controllers or third-party DAQ systems.
How is temperature uniformity verified during factory calibration?
Using a 9-point thermocouple array per ISO 17025-accredited procedures, with measurements recorded at center, corners, and mid-walls at 100 °C, 150 °C, and 200 °C for 3 hours each.