Yoyi MJ-300-I Mold Incubator for Microbial Culture and BOD Testing

Overview

The Yoyi MJ-300-I Mold Incubator is a precision-engineered environmental chamber designed for controlled microbial cultivation, fungal growth studies, biochemical oxygen demand (BOD) analysis, and long-term stability testing of biological samples. It operates on the principle of forced-air convection to ensure uniform thermal distribution across the entire working chamber, enabling reproducible incubation conditions critical for regulatory-compliant microbiological assays. The unit meets foundational requirements for ISO/IEC 17025-accredited laboratories conducting environmental monitoring, pharmaceutical QC testing, food safety validation, and academic life science research. Its operational temperature range (0–65 °C) supports both mesophilic and thermotolerant strain propagation, while its structural design prioritizes contamination control, ease of cleaning, and long-term operational reliability in high-throughput lab environments.

Key Features

• Robust construction with cold-rolled steel exterior and electrophoretically coated finish for corrosion resistance and durability;
• Polished stainless-steel interior chamber with rounded corners (R ≥ 15 mm) and removable, height-adjustable shelves for optimal spatial flexibility and decontamination efficiency;
• Dual-door configuration with double-glazed observation window and silicone-sealed gasket to minimize thermal leakage during visual inspection;
• Integrated UV-C germicidal lamp (254 nm) mounted in the ceiling plenum, activated automatically during idle cycles to suppress airborne microbial load between experiments;
• Microprocessor-based PID temperature controller with 0.1 °C resolution, real-time display of setpoint, actual chamber temperature, and elapsed time;
• Power-loss recovery function preserving user-defined parameters and runtime status after unexpected shutdowns;
• Over-temperature deviation alarm with independent hardware limiter (non-software dependent) for fail-safe thermal protection;
• Five-inch LCD interface supporting multi-parameter visualization—including target temperature, current reading, timer countdown, and system status flags;
• Four-position castor base with dual-mode mobility: omnidirectional rolling plus lockable static stabilization for vibration-sensitive applications.

Sample Compatibility & Compliance

The MJ-300-I accommodates standard Petri dishes (up to 150 mm diameter), test tubes (16–25 mm OD), culture flasks (up to 2 L), and BOD bottles (300 mL). Its internal geometry allows unobstructed airflow around stacked racks without compromising uniformity. The incubator complies with general laboratory equipment safety standards per IEC 61010-1 and is suitable for use in GLP- and GMP-aligned workflows where traceability and environmental consistency are required. While not certified to specific FDA 21 CFR Part 11 or ISO 14644 cleanroom classifications, it supports validated processes when integrated into documented SOPs for microbial enumeration (e.g., ISO 4833-1, USP , APHA Standard Methods 9215).

Software & Data Management

The MJ-300-I operates as a standalone instrument with no embedded data logging capability; however, optional RS485 serial interface (available as accessory) enables integration with third-party SCADA systems or centralized lab management platforms via Modbus RTU protocol. When paired with supplied PC software, users can remotely configure temperature profiles, export timestamped chamber logs (±0.5 °C accuracy), and generate audit-ready reports compliant with internal QA documentation protocols. Optional programmable controller adds up to 99 multi-step cycles (30 segments per cycle, max 99 h 59 min per segment), supporting complex ramp-hold-cool sequences required for accelerated stability studies.

Applications

• Biochemical Oxygen Demand (BOD₅) determination per ASTM D5210 and ISO 5815-1;
• Fungal isolation and identification (e.g., Aspergillus, Penicillium, Candida spp.) under standardized incubation conditions;
• Environmental monitoring of air, water, and surface samples in pharmaceutical manufacturing facilities;
• Validation of antimicrobial efficacy testing (e.g., ISO 22196, JIS Z 2801);
• Plant tissue culture pre-incubation and callus maintenance at sub-ambient temperatures;
• Evaluation of electronic component resistance to mold growth per MIL-STD-810H Method 508.7;
• Long-term storage of reference cultures and working stocks under non-refrigerated conditions.

FAQ

Is the MJ-300-I suitable for humidity-controlled fungal cultivation?
No — the MJ-300-I is a dry incubator. For regulated humidity control (60–85% RH), select the MJ-300-II variant equipped with a dedicated humidification system and closed-loop RH feedback control.
Does this model support GLP-compliant data integrity requirements?
Out-of-the-box, it lacks electronic audit trail functionality. However, when configured with the optional RS485 interface and validated software, it supports ALCOA+ principles for raw data capture and retention.
What is the maximum load capacity for shelf loading?
Each adjustable stainless-steel shelf supports up to 15 kg uniformly distributed. Total shelf load must not exceed 60 kg to maintain airflow integrity and thermal uniformity.
Can the UV lamp be disabled or scheduled independently?
Yes — the UV system features manual ON/OFF toggle and programmable activation timing via the main controller menu, allowing synchronization with chamber idle periods.
Is calibration certificate included with shipment?
A factory calibration report (traceable to NIM, China) is provided. Full ISO/IEC 17025 calibration services are available upon request through authorized service partners.