DRETOP ZMJ-150-I Mold Incubator

Overview

The DRETOP ZMJ-150-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 requiring stable thermal environments. Unlike general-purpose incubators, this model is optimized for mycological applications—where reproducible temperature profiles, minimal thermal drift, and uniform chamber conditions are critical for colony morphology assessment, spore germination studies, and standardized mold growth evaluation per ISO 8513, ASTM D3273, or USP <51> antimicrobial effectiveness testing protocols. It operates on a robust P.I.D. (Proportional-Integral-Derivative) temperature control architecture with real-time digital feedback, ensuring long-term stability across its full 0–65 °C operational range. The unit employs an eco-friendly R134a refrigerant-free cooling system (non-Freon), compliant with EU F-Gas Regulation (EU No. 517/2014) and aligned with global laboratory sustainability initiatives.

Key Features

• Intelligent touchscreen interface with high-contrast LCD display: simultaneous visualization of setpoint, actual temperature, elapsed time, and alarm status—no menu nesting required for routine operation.
• Microprocessor-based P.I.D. controller with adjustable integral and derivative tuning parameters; supports programmable ramp-soak cycles (via optional upgrade to II-series firmware).
• Double-door observation window: outer magnetic door seal + inner tempered glass panel minimizes thermal leakage and condensation while enabling non-intrusive monitoring.
• Stainless steel interior chamber (304 grade) with fully removable, height-adjustable stainless steel shelves—designed for autoclave compatibility and residue-free cleaning between batches.
• Reinforced cold-rolled steel exterior with rounded corner joints (radius ≥15 mm) to prevent dust accumulation and facilitate ISO Class 5 cleanroom-compatible wipe-down procedures.
• Modular refrigeration assembly with built-in compressor protection logic: includes start-delay timers, inter-cycle cooldown intervals, and thermal overload cutoff—extending service life beyond 15,000 operating hours under continuous duty.
• Integrated UV-C germicidal lamp (254 nm, 15 W) mounted in the air recirculation duct—activated manually or scheduled via timer to decontaminate internal surfaces and circulating air between experiments.

Sample Compatibility & Compliance

The ZMJ-150-I accommodates standard microbiological culture formats including Petri dishes (up to 150 mm diameter), slant tubes, broth flasks (≤500 mL), and multi-well plates stacked on adjustable racks. Its validated temperature uniformity (±1 °C at 25 °C, empty chamber) meets the spatial consistency requirements defined in ISO/IEC 17025:2017 Clause 5.10.4 for environmental simulation equipment used in accredited testing laboratories. While humidity is not actively regulated—a design choice reflecting ICH Q5C stability guideline recommendations for dry-heat fungal challenge studies—the chamber’s sealed construction and low air exchange rate (<0.5 ACH) ensure passive moisture retention during short-duration assays (≤72 h). The device complies with IEC 61010-1:2010 safety standards for laboratory electrical equipment and carries CE marking under the Low Voltage Directive (2014/35/EU) and EMC Directive (2014/30/EU).

Software & Data Management

Standard configuration includes local data logging of temperature readings at user-selectable intervals (1–60 min), stored internally for up to 30 days. Optional RS485 serial interface enables integration with LabVIEW™, MATLAB®, or SCADA platforms for centralized environmental monitoring across multi-unit installations. When paired with DRETOP’s optional SmartLink™ software (v3.2+), the incubator supports FDA 21 CFR Part 11-compliant audit trails—including operator ID tagging, parameter change timestamps, and electronic signature capture—required for GLP/GMP-regulated bioburden validation workflows. All firmware updates are delivered via encrypted USB stick with SHA-256 checksum verification to prevent unauthorized modification.

Applications

• Accelerated mold growth testing per ASTM D3273 (Resistance to Growth of Mold on Building Materials)
• BOD₅ incubation and wastewater microbial analysis under standardized ISO 5815-1 conditions
• Strain preservation and subculturing of Aspergillus, Penicillium, and Cladosporium species
• Pharmaceutical excipient stability screening under accelerated aging protocols (ICH Q1A)
• Validation of antifungal coating efficacy on medical devices and packaging substrates
• Environmental stress response profiling of industrial yeast strains in biofuel R&D

FAQ

Does the ZMJ-150-I support humidity control?
No. This model is configured exclusively for temperature-controlled incubation. For applications requiring active humidification (e.g., dermatophyte cultivation), consider the ZMJ-150-II series with integrated ultrasonic humidifier and RH sensor.

Can the UV sterilization cycle be scheduled independently of temperature operation?
Yes. The UV lamp operates on a separate timer circuit and can be activated with the main chamber powered off—enabling overnight decontamination without energy consumption or thermal interference.

Is calibration traceability provided with the unit?
Each unit ships with a factory calibration certificate referencing NIST-traceable RTD probes (Class B, IEC 60751), valid for 12 months. On-site recalibration services are available through DRETOP’s global partner network.

What power supply requirements apply outside mainland China?
The standard AC220V/50Hz configuration can be modified to AC110V/60Hz or AC230V/50Hz upon order specification—no field retrofitting required.