Yoyilab MJ-150F-I Mold Incubator for BOD Testing and Microbial Culture

Overview

The Yoyilab MJ-150F-I Mold Incubator is a precision-engineered, forced-air thermal chamber designed specifically for standardized microbial cultivation, biochemical oxygen demand (BOD) testing, and long-term stability assessment of fungi, bacteria, yeasts, and other aerobic microorganisms. It operates on the principle of active air circulation via an internal axial fan and optimized ducting to ensure rapid thermal equilibration and minimal spatial gradients—critical for reproducible colony formation, spore germination studies, and regulatory-compliant environmental monitoring. The unit meets foundational requirements for ISO 8573-1 (compressed air purity), ASTM D3273 (mold resistance testing), and USP / microbiological enumeration protocols when integrated into validated laboratory workflows. Its temperature control architecture supports both ambient and sub-ambient operation (down to 0 °C), enabling low-temperature incubation for psychrotrophic strain isolation or cold-acclimation experiments without refrigerant-based cooling.

Key Features

• Robust dual-door construction with double-layer tempered glass and silicone gasket sealing—minimizes thermal leakage during observation and maintains stable internal conditions during frequent access.
• Electropolished stainless-steel interior chamber (304 grade) with seamless, radius-rounded corners and adjustable stainless-steel shelving—ensures cleanability, corrosion resistance, and compatibility with alcohol-, hydrogen peroxide-, or UV-C decontamination cycles.
• Integrated ultraviolet germicidal irradiation (UVGI) system mounted in the ceiling plenum—operates at 254 nm wavelength to inactivate airborne and surface-adhered microorganisms between cycles, reducing cross-contamination risk in multi-user labs.
• Microprocessor-based PID temperature controller with 0.1 °C resolution, programmable timer (1–9999 minutes), and auto-recovery function following power interruption—preserves experimental integrity and eliminates manual restart procedures.
• Over-temperature deviation protection circuit with independent thermal cutoff—complies with IEC 61000-4-5 surge immunity standards and prevents thermal runaway under fault conditions.
• Four-position leveling feet with locking casters—enables precise horizontal alignment on uneven floors and safe repositioning within biosafety cabinets or controlled-environment rooms.

Sample Compatibility & Compliance

The MJ-150F-I accommodates standard Petri dishes (up to 150 mm diameter), multi-well plates (6–96-well), culture tubes (13–25 mm OD), and BOD bottles (300 mL glass stoppered). Its uniform airflow profile and ±1.5 °C temperature homogeneity (measured per ISO 15265:2021 Annex A at 25 °C) support GLP-compliant validation protocols for method transfer and equipment qualification. While not intrinsically humidity-controlled (unlike the MJ-150-II variant), its sealed chamber design permits optional external humidification integration via calibrated vapor delivery modules. The unit is CE-marked for EMC and LVD compliance and conforms to RoHS 2011/65/EU directives—confirming absence of regulated fluorocarbons in insulation and refrigerants.

Software & Data Management

The MJ-150F-I features a 5.7-inch TFT LCD interface with menu-driven navigation for simultaneous display of setpoint, real-time chamber temperature, elapsed time, and countdown timer status. Optional RS485 communication port (available as accessory) enables Modbus RTU protocol integration with LabArchives, ELN systems, or SCADA platforms for automated log export and audit-trail generation. When paired with Yoyilab’s optional data acquisition software, users can generate CSV-formatted temperature logs compliant with FDA 21 CFR Part 11 requirements—including electronic signatures, user-level permissions, and immutable timestamping. Firmware updates are performed via USB flash drive, ensuring traceable version control across instrument fleets.

Applications

• BOD₅ determination per APHA Standard Methods 5210B and ISO 5815-1:2019 using seeded dilution techniques.
• Fungal growth inhibition assays for antifungal agent screening (e.g., azoles, echinocandins) under CLSI M38-A3 guidelines.
• Mold resistance testing of building materials, textiles, and polymer composites per ASTM G21-15 and JIS Z 2911.
• Long-term viability assessment of lyophilized bacterial cultures (e.g., ATCC strains) during storage stability studies.
• Environmental monitoring of HVAC systems, cleanrooms, and pharmaceutical water loops per EU GMP Annex 1.
• Educational use in undergraduate microbiology laboratories for plate count agar (PCA), Sabouraud dextrose agar (SDA), and malt extract agar (MEA) incubations.

FAQ

Does the MJ-150F-I include humidity control?
No—the “F” designation indicates a fluorocarbon-free refrigeration system, not humidity regulation. For programmable RH control (60–85% RH, ±5% RH accuracy), select the MJ-150-II model.
Can this incubator be used for anaerobic culture?
No—it provides only aerobic, forced-air circulation. Anaerobic applications require dedicated anaerobic chambers or gas-purged glove boxes.
Is calibration certificate included with shipment?
A factory calibration report (traceable to NIM China) is provided; full ISO/IEC 17025-certified calibration requires third-party service engagement.
What safety certifications does it hold?
It carries CE marking for electromagnetic compatibility (EN 61326-1) and low-voltage directive (EN 61010-1), plus RoHS 2011/65/EU compliance documentation.
Can I retrofit the UV system with a different wavelength?
The 254 nm UV-C lamp is fixed and non-interchangeable; spectral modification voids safety certification and invalidates warranty.