Yoyilab MJ-250-I Mold Incubator with UV Sterilization System

Overview

The Yoyilab MJ-250-I Mold Incubator is a purpose-engineered environmental chamber designed for controlled fungal cultivation, microbial preservation, and stability testing under regulated temperature conditions. It operates on the principle of forced-air convection to ensure uniform thermal distribution across the working chamber, enabling reproducible growth environments for molds, yeasts, and other aerobic microorganisms. The system complies with standard laboratory requirements for BOD analysis, environmental monitoring, pharmaceutical stability studies (per ICH Q1 guidelines), and antimicrobial susceptibility testing protocols. Its operational range spans from refrigerated (0 °C) to moderately elevated temperatures (65 °C), supporting both mesophilic and thermotolerant strain propagation. The integrated ultraviolet (UV-C, 254 nm) irradiation system—mounted at the chamber ceiling—sterilizes recirculated air in real time, significantly reducing airborne bioburden and minimizing cross-contamination risk during extended incubation cycles.

Key Features

• Robust dual-door construction with high-efficiency insulation, minimizing thermal leakage during observation without compromising chamber stability
• Electropolished stainless-steel interior chamber with rounded corners and adjustable stainless-steel shelving for optimal cleaning and spatial flexibility
• Microprocessor-based PID temperature controller with 0.1 °C resolution, programmable timer (1–9999 minutes), and auto-recovery function after power interruption
• Dual-stage safety protection: independent overtemperature cutoff and deviation alarm system compliant with IEC 61000-4-2 EMC standards
• Five-inch LCD interface displaying setpoint, real-time chamber temperature, elapsed time, and alarm status simultaneously
• Four-directional casters with locking mechanism and fixed leveling feet for stable positioning on laboratory flooring
• Energy-efficient design using non-ozone-depleting refrigerants (R134a/R600a), meeting EU F-Gas Regulation (EU) No 517/2014

Sample Compatibility & Compliance

The MJ-250-I accommodates Petri dishes, multi-well plates, culture flasks (up to 2 L), and sterile sample containers commonly used in mycological and microbiological workflows. Its chamber geometry supports ISO 8573-1 Class 4 compressed air cleanliness standards when used with external filtration. While not certified for GLP/GMP production environments out-of-the-box, the unit meets foundational requirements for analytical method validation per USP and ISO/IEC 17025:2017 Annex A.2.3 (equipment qualification). Optional RS485 serial interface enables integration into centralized lab monitoring systems compliant with FDA 21 CFR Part 11 for electronic record integrity.

Software & Data Management

The incubator supports optional data logging via RS485-to-USB gateway and proprietary PC software (sold separately), enabling export of time-stamped temperature profiles in CSV format. The software provides audit-trail functionality—including user login history, parameter change logs, and alarm event timestamps—aligned with ALCOA+ principles for data integrity. Firmware versioning and calibration lockout features prevent unauthorized configuration changes, facilitating routine IQ/OQ/PQ documentation. No cloud connectivity or remote access capabilities are embedded; all data remains local unless interfaced externally through validated third-party middleware.

Applications

• Fungal isolation and identification in environmental and clinical samples per CLSI M38-A3 guidelines
• BOD₅ incubation for wastewater treatment compliance (ASTM D5210-20)
• Stability assessment of probiotic formulations and fermented food products
• Antifungal susceptibility testing (AFST) using agar dilution or broth microdilution methods
• Accelerated aging studies for packaging materials under elevated humidity conditions (when paired with optional MJ-250-II humidity module)
• Evaluation of mold resistance in electronic components per MIL-STD-810H Method 508.7

FAQ

Does the MJ-250-I include humidity control?
No—the MJ-250-I model is temperature-only. Humidity regulation (60–85% RH, ±5% RH accuracy) is available exclusively in the MJ-250-II variant.
Is UV sterilization active during incubation cycles?
Yes—the UV lamp operates continuously during normal use but automatically deactivates when the door is opened, complying with IEC 62471 photobiological safety limits.
Can this incubator be used for mammalian cell culture?
Not recommended—lack of CO₂ control, HEPA filtration, and precise humidity regulation precludes use for sensitive eukaryotic cultures.
What is the calibration interval recommendation?
Yoyilab recommends annual verification against NIST-traceable reference probes per ISO/IEC 17025 Clause 6.5.2.
Are replacement UV lamps supplied with the unit?
One spare UV-C lamp (GPH115T5L/4P) is included; lifespan is rated at 8,000 hours under continuous operation.