DRETOP TPH-16A Dual-Mode Incubator-Drying Oven

Overview

The DRETOP TPH-16A Dual-Mode Incubator-Drying Oven is a precision-engineered laboratory oven designed to serve two distinct operational regimes within a single compact chamber: low-temperature biological incubation (RT+5°C to 80°C) and high-temperature dry-heat processing (80°C to 250°C). Unlike conventional ovens limited to either drying or incubation, the TPH-16A implements a programmable thermal mode transition—automatically shifting between incubation and drying protocols based on user-defined setpoints, with 80°C as the default switching threshold. Its forced-air convection system ensures rapid thermal equilibration and uniform heat distribution across the 16 L stainless-steel chamber, minimizing axial and radial temperature gradients. The oven operates on the principle of dry-heat sterilization—relying on oxidative degradation of microbial cellular components, protein denaturation, and electrolyte concentration-induced toxicity—making it suitable for sterilizing heat-stable, moisture-sensitive materials such as glassware, metallic instruments, anhydrous oils, and powdered pharmaceuticals in compliance with ISO 17665-1 and USP guidelines for dry-heat sterilization validation.

Key Features

• Intelligent dual-mode control: Microprocessor-based PID temperature controller with independent incubation/drying mode selection, adjustable mode-switching temperature (default 80°C), and real-time digital display of setpoint, actual temperature, and elapsed time.
• High-fidelity thermal performance: ±0.5°C fluctuation in incubation mode and ±1°C in drying mode; ±2.5°C uniformity across the entire working volume; 0.1°C resolution for precise process repeatability.
• Robust thermal architecture: Double-walled construction with high-density glass fiber insulation; electrostatically coated steel exterior; 304 stainless-steel interior chamber and adjustable stainless-steel shelving (1 standard shelf included).
• Enhanced operator safety: Dual-stage mechanical door lock with silicone gasket seal; independent over-temperature cut-off circuit; audible/visual alarm for deviation beyond user-set safety limits; comprehensive electrical protection (overcurrent, short-circuit, ground-fault, and thermal overload).
• Ergonomic usability: Large backlit LCD interface with tri-color status indicators; self-diagnostic function displaying fault codes; intuitive menu navigation; power-loss data retention with automatic parameter recovery.

Sample Compatibility & Compliance

The TPH-16A supports validated dry-heat sterilization of Class I and II medical devices, borosilicate glassware (e.g., Petri dishes, pipettes, vials), stainless-steel surgical tools, and thermally stable excipients. It is not intended for sterilizing heat-labile polymers (e.g., PVC, polyethylene), rubber components, or aqueous solutions. The chamber design complies with GLP and GMP environmental monitoring requirements for non-sterile manufacturing support applications. While not certified to EN 61010-1 or UL 61010-1 out-of-the-box, its electrical architecture meets fundamental safety prerequisites for Class II laboratory equipment operating under AC 220 V, 50 Hz supply. Users performing sterilization validation must establish cycle parameters per ISO 14644-1 (cleanroom classification), ISO 11138-4 (dry-heat sterility assurance), and internal SOPs aligned with FDA 21 CFR Part 211 Subpart C.

Software & Data Management

The base configuration includes embedded firmware supporting time-programmed temperature ramps, hold steps, and up to 99-cycle repeat functions. Optional upgrades include a programmable logic controller (PLC) module enabling multi-segment thermal profiles, or a full-color 7-inch capacitive touchscreen interface with USB data export capability (CSV format). When equipped with the RS-485 communication port (optional), the unit integrates into centralized lab management systems via Modbus RTU protocol. All data logging—including timestamps, temperature readings, alarm events, and mode transitions—is stored internally with battery-backed memory. Audit-trail functionality meets ALCOA+ principles when paired with compliant third-party software for 21 CFR Part 11-compliant electronic records.

Applications

• Dry-heat sterilization of reusable laboratory glassware and metal instrumentation in academic, clinical, and pharmaceutical QC labs.
• Moisture removal from hygroscopic reagents, catalysts, and ceramic substrates prior to analytical weighing or thermal analysis.
• Bacterial culture maintenance at controlled sub-germination temperatures (e.g., 30–37°C) for microbiological stability testing.
• Accelerated aging studies of packaging materials and polymer formulations under elevated dry-heat conditions.
• Pre-drying of samples prior to gravimetric moisture content determination (ASTM D2231, ISO 12571).
• Post-sterilization cooling stabilization for heat-sensitive instrument assemblies requiring gradual thermal ramp-down.

FAQ

What is the maximum validated sterilization temperature for the TPH-16A?
The chamber is rated for continuous operation up to 250°C, and dry-heat sterilization cycles are typically validated at 160°C for 120 minutes or 180°C for 30 minutes per ISO 11138-4.
Can the incubation and drying modes be scheduled automatically?
Yes—the optional programmable controller allows sequential execution of incubation-to-drying transitions, including dwell times, ramp rates, and hold durations.
Is the TPH-16A suitable for vacuum-assisted drying?
No—this model does not integrate vacuum capability. For vacuum drying applications, consider the DRETOP ZK series vacuum ovens.
Does the unit comply with FDA 21 CFR Part 11 for electronic records?
Out-of-the-box firmware does not provide Part 11 compliance; however, the optional touchscreen + audit-trail software package enables compliant electronic signatures, access controls, and immutable record retention.
What maintenance is required to ensure long-term thermal accuracy?
Annual calibration using NIST-traceable reference thermometers is recommended; routine cleaning of air intake filters and inspection of door gasket integrity should be performed quarterly.