DRETOP ZMJ-70F-I Mold Incubator

Overview

The DRETOP ZMJ-70F-I Mold Incubator is a precision-engineered forced-air incubation system designed specifically for the controlled cultivation of filamentous fungi, yeasts, and other eukaryotic microorganisms under stable thermal conditions. Unlike general-purpose incubators, this model incorporates structural and thermal design features optimized for mycological applications—particularly where reproducible growth kinetics, colony morphology assessment, and standardized environmental conditioning are required. It operates on a P.I.D. (Proportional-Integral-Derivative) temperature control algorithm with real-time digital feedback, ensuring high reproducibility across repeated experimental cycles. While it does not incorporate active humidity regulation—a deliberate design choice to prioritize thermal stability and simplify maintenance—the unit maintains consistent air circulation via an optimized axial-flow duct system and insulated double-door architecture, minimizing thermal gradients and condensation risks during extended operation. The ZMJ-70F-I complies with fundamental laboratory equipment safety standards for Class II biological environments and is routinely deployed in academic microbiology labs, pharmaceutical quality control units, and environmental testing facilities conducting ISO 11133-compliant media performance validation or ASTM D3273 mold resistance evaluation.

Key Features

• Intelligent digital touchscreen interface with full-screen parameter display and intuitive navigation; supports multi-user access with password-protected settings.
• Microprocessor-based P.I.D. temperature controller with 0.1 °C resolution, adjustable alarm thresholds, and automatic over-temperature cutoff to protect samples and instrumentation integrity.
• Robust cold-rolled steel outer casing with stainless-steel interior chamber and removable, height-adjustable stainless-steel shelves—designed for autoclave-compatible cleaning and residue-free decontamination.
• Dual-door observation window: inner tempered glass panel with magnetic door seal and outer insulating frame—reducing heat loss by >35% compared to single-glass configurations.
• Energy-efficient hermetic compressor with eco-friendly R134a refrigerant (non-ozone-depleting), integrated start-delay and cycle-interval protection to extend service life beyond 15,000 operational hours.
• Four-corner rounded internal geometry eliminates stagnant air zones and facilitates uniform laminar airflow distribution throughout the 70 L working volume.
• Integrated UV-C germicidal lamp (254 nm) with manual activation switch and safety interlock—validated to achieve ≥3-log reduction of airborne Aspergillus niger spores after 30 minutes exposure.

Sample Compatibility & Compliance

The ZMJ-70F-I accommodates standard Petri dishes (90 mm and 150 mm), slant tubes, agar plates, and multi-well culture trays without spatial interference. Its uniform temperature profile (±1 °C at 25 °C, empty load) meets the minimum performance criteria specified in ISO 8570:2020 for fungal growth chambers used in antimicrobial efficacy testing. Though not certified for GLP/GMP production environments, the device supports audit-ready documentation through optional RS485 serial output (Modbus RTU protocol) for integration into LIMS or electronic lab notebook systems. It conforms to IEC 61010-1:2010 for electrical safety in laboratory equipment and includes built-in power-failure recovery logic that restores pre-interruption setpoints and timers upon grid restoration.

Software & Data Management

The incubator operates autonomously via embedded firmware with no external software dependency. All operational parameters—including current temperature, setpoint, elapsed time, and alarm history—are stored in non-volatile memory and persist through power cycling. Optional accessories enable expanded data handling: an RS485 interface allows bi-directional communication with SCADA or LabVIEW platforms for remote monitoring and event-triggered logging; a programmable timer module supports up to 9999-minute incubation cycles with repeat scheduling; and a dedicated thermal printer accessory provides hard-copy records compliant with FDA 21 CFR Part 11 requirements when paired with timestamped audit trails.

Applications

• Standardized cultivation of Aspergillus, Penicillium, and Trichoderma species for morphological identification and sporulation studies.
• BOD₅ testing per APHA Standard Methods 5210B, where stable 20–25 °C incubation is critical for microbial oxygen demand quantification.
• Accelerated mold resistance screening of construction materials, textiles, and packaging polymers per ASTM D3273 and JIS Z 2911 protocols.
• Maintenance of stock cultures and preservation of fungal isolates under low-metabolic dormancy conditions (e.g., 4–8 °C sub-culturing).
• Environmental simulation for evaluating thermal tolerance limits of psychrophilic and mesophilic molds in food safety and spoilage modeling.

FAQ

Does the ZMJ-70F-I support humidity control?
No. This model is configured exclusively for temperature-controlled incubation. For applications requiring regulated relative humidity, consider the ZMJ-70-II series, which integrates ultrasonic humidification and capacitive RH sensing.
Is the UV sterilization function automated or manually triggered?
UV irradiation is manually initiated via front-panel switch with mechanical safety interlock—door opening immediately deactivates the lamp to prevent operator exposure.
Can the incubator be validated for IQ/OQ protocols?
Yes. The unit provides stable thermal performance suitable for installation and operational qualification; DRETOP supplies calibration certificates traceable to NIM (National Institute of Metrology, China) upon request.
What is the maximum ambient operating temperature for reliable performance?
The device is rated for continuous operation in ambient environments up to 32 °C with ≤70% RH, as verified per IEC 60068-2-1 and IEC 60068-2-2 test conditions.
Are spare parts and service support available outside mainland China?
DRETOP maintains authorized technical service partners in Germany, USA, and Singapore; consumables (shelves, UV lamps, gaskets) are stocked globally via ISO 13485-certified distributors.