Thermo Scientific Heratherm OGS180 General-Purpose Drying Oven

Overview

The Thermo Scientific Heratherm OGS180 General-Purpose Drying Oven is an engineered solution for routine thermal processing in academic, industrial, and quality control laboratories. Designed around natural convection heating—where heat transfer occurs solely via buoyancy-driven air movement without forced airflow—the OGS180 delivers stable, repeatable thermal environments suitable for drying, curing, sterilization validation support, and low-risk thermal conditioning of non-volatile samples. Its operational temperature range of 50–250 °C covers standard ISO 554 and ASTM D1721-compliant conditioning protocols, while its ±0.4 °C short-term stability at 150 °C ensures consistency across time-sensitive procedures such as moisture loss determination (per USP & Ph. Eur. general chapter <905>) or polymer pre-conditioning prior to mechanical testing.

Key Features

• Natural convection architecture eliminates fan-induced turbulence, minimizing sample disturbance and reducing particulate redistribution—critical for powder drying, filter drying, or glassware pre-baking where airflow may compromise integrity.
• Stainless steel 1.4016 inner chamber with fully rounded corners and seamless welds enables rapid decontamination and meets GLP-aligned cleaning validation requirements.
• Vacuum fluorescent display (VFD) provides high-contrast, wide-angle readability under ambient lab lighting, supporting ergonomic operation during extended shifts.
• Microprocessor-based touch-button controller supports intuitive setpoint entry, real-time temperature monitoring, and dual-stage timer programming (start delay + duration), facilitating unattended overnight operation.
• 180° full-swing door design improves ergonomics and accessibility—particularly beneficial when handling large trays, stacked petri dishes, or volumetric glassware.
• Integrated over-temperature safety cutoff with audible alarm prevents thermal runaway and safeguards both sample integrity and chamber lining longevity.
• RS232 serial interface enables direct connection to laboratory PCs for automated data logging, remote parameter adjustment, and audit-trail generation compliant with FDA 21 CFR Part 11 when paired with validated software.
• Optional exhaust port doubles as a physical access point for external PT100 or thermocouple probes—enabling independent verification of chamber uniformity per ISO/IEC 17025 calibration practices.

Sample Compatibility & Compliance

The OGS180 accommodates a broad spectrum of non-hazardous, non-explosive, and non-volatile materials—including metal parts, ceramic substrates, textile specimens, pharmaceutical excipients, and analytical standards. Its natural convection profile avoids localized hot spots common in forced-air ovens, making it appropriate for applications requiring gentle, uniform thermal exposure. The unit complies with IEC 61010-1:2010 safety standards for electrical equipment in laboratory use and carries CE marking. While not classified as a Class II medical device, its construction and control logic align with GMP Annex 15 and EU GMP Chapter 3 expectations for auxiliary equipment used in process support roles. Chamber material 1.4016 conforms to EN 10088-1 specifications for corrosion resistance in humid or mildly acidic environments.

Software & Data Management

Out-of-the-box RS232 connectivity allows integration with third-party data acquisition platforms (e.g., LabVIEW, MATLAB, or custom Python scripts) for timestamped temperature logging, trend analysis, and report generation. When deployed within a validated environment, the interface supports electronic record retention aligned with ALCOA+ principles—ensuring Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, and Available documentation. Optional Thermo Fisher Connect-enabled firmware upgrades (available separately) extend functionality to include email alerts on deviation events and cloud-based instrument health monitoring.

Applications

• Drying of filter papers, crucibles, and gravimetric samples prior to weighing (ASTM E122, ISO 787-2)
• Curing of epoxy-coated substrates and printed circuit board assemblies
• Conditioning of polymer films and composite laminates before tensile or impact testing (ISO 291, ASTM D618)
• Pre-heating of glassware and stainless-steel tools in cleanroom-adjacent prep areas
• Stabilization of reference standards and certified reference materials (CRMs) under controlled humidity-avoidant conditions
• Supporting environmental stress screening (ESS) protocols where thermal soak cycles precede functional testing

FAQ

Is the OGS180 suitable for sterilization applications?

No—this oven is not validated for microbial kill kinetics and lacks steam generation, vacuum capability, or HEPA filtration required for sterilization. It supports depyrogenation only when operated above 250 °C (beyond its rated range); therefore, it should not be used for endotoxin removal per USP <1211>.

Can I validate temperature uniformity per ISO 14644-3?

Yes—the exhaust port serves as a calibrated probe insertion point, and the RS232 output permits synchronized multi-point logging. Validation must be performed using NIST-traceable sensors and documented per your site’s IQ/OQ protocol.

Does the oven support ramp-soak profiles?

No—the OGS180 features only fixed-setpoint operation with on/off timer control. For programmable ramp/soak sequences, consider the Heratherm GR series or the Thermo Scientific TSX series.

What is the maximum number of shelves that can be installed simultaneously?

Up to 19 shelves may be installed, subject to load distribution limits (≤25 kg per shelf). Total internal volume remains constant, but usable height per shelf decreases proportionally.

Is the stainless steel chamber electropolished?

No—the interior uses mill-finish 1.4016 stainless steel, which provides adequate corrosion resistance for typical lab solvents and humidity levels but is not electropolished for ultra-high-purity applications.