HePu MJ-70-I Mold Incubator

Overview

The HePu MJ-70-I Mold Incubator is a precision-engineered environmental chamber designed specifically for controlled fungal cultivation, microbial growth studies, and long-term biological sample maintenance under stable thermal and humidity conditions. Built upon the foundational principles of forced-air convection and closed-loop PID temperature regulation, this incubator delivers high reproducibility in temperature control—critical for standardized protocols in mycology, environmental microbiology, and pharmaceutical quality control. Its 70-liter working volume provides sufficient space for multi-tiered culture plates, Petri dishes, slants, and liquid media flasks while maintaining uniform thermal distribution across the chamber interior. The unit complies with general laboratory safety and operational expectations for Class II biological containment environments and supports adherence to ISO/IEC 17025-compliant calibration practices when used with traceable reference standards.

Key Features

• Microprocessor-based digital temperature controller with 0.1°C resolution and programmable timer (1–9999 minutes), enabling precise scheduling of incubation cycles without manual intervention.
• Highly polished mirror-finish stainless steel interior with seamless rounded corners and removable, height-adjustable shelving—optimized for sterility maintenance and rapid decontamination between runs.
• Double-layer tempered glass observation window with anti-fog coating ensures clear visual monitoring of cultures without compromising thermal integrity or introducing external contamination risks.
• Independent over-temperature protection circuit that automatically cuts power if the internal setpoint exceeds user-defined limits—meeting basic IEC 61000-4-5 surge immunity and functional safety expectations for lab equipment.
• CFC-free refrigeration system using R134a refrigerant, aligned with Montreal Protocol requirements and supporting institutional sustainability compliance objectives.
• Low-noise axial fan assembly and insulated chamber walls minimize vibration transfer and thermal drift—essential for sensitive filamentous fungi or slow-growing molds requiring extended incubation periods.

Sample Compatibility & Compliance

The MJ-70-I accommodates standard microbiological consumables including 90-mm and 100-mm Petri dishes, test tubes (up to 20 mm diameter), culture flasks (up to 500 mL), and agar slants. Its humidity range (20–50% RH at 20°C) is calibrated for non-condensing environments typical of aerobic mold propagation, such as Aspergillus, Penicillium, and Cladosporium species. While not certified for GLP/GMP production environments, the unit meets baseline performance criteria referenced in USP <61>, ISO 11133:2014 (microbiological culture media preparation), and ASTM D3273 (mold resistance testing of building materials). Optional RS485 interface enables integration into centralized lab monitoring systems compliant with FDA 21 CFR Part 11 data integrity requirements when paired with validated software.

Software & Data Management

Standard operation requires no external software—the onboard controller logs real-time temperature values and stores up to 10 user-defined programs. For advanced data traceability, optional RS485 communication (add-on module) permits bidirectional connection to PC-based SCADA or LIMS platforms. When combined with HePu’s optional communication software, users gain access to time-stamped temperature history exports (CSV format), alarm event logs with timestamps, and audit trails meeting ALCOA+ principles. Printer integration (optional accessory) supports hard-copy generation of run records for SOP-driven workflows in regulated academic or contract research laboratories.

Applications

• Fungal isolation and identification workflows per ISO 13789 and EN 15288 standards.
• BOD₅ incubation for wastewater analysis in accordance with APHA Standard Methods 5210B.
• Pharmaceutical stability testing of raw materials under accelerated mold-risk conditions (ICH Q1A).
• Agricultural seed-borne pathogen screening and antifungal efficacy evaluation.
• Environmental monitoring of indoor air quality samples collected on malt extract agar (MEA) or dichloran glycerol (DG18) media.
• Teaching laboratory use for undergraduate microbiology courses emphasizing aseptic technique and colony morphology assessment.

FAQ

Is the MJ-70-I suitable for anaerobic fungal culture?
No—this model operates under ambient atmospheric conditions and does not support gas modulation (e.g., N₂/CO₂ blending) or oxygen depletion.

Can humidity be actively controlled above 50% RH?
No—the built-in humidity regulation is passive and limited to 20–50% RH at 20°C; active humidification requires external accessories not supplied by HePu.

What calibration documentation is provided?
Each unit ships with a factory calibration certificate referencing NIST-traceable temperature sensors; users are responsible for periodic verification per their internal QA schedule.

Does the incubator meet UL or CE safety certification?
The MJ-70-I conforms to GB 4793.1–2007 (Chinese national standard equivalent to IEC 61010-1); CE marking is not affixed unless ordered with EU-specific compliance package.

How many Petri dishes fit on one shelf?
Up to 12 standard 100-mm Petri dishes can be arranged per shelf without stacking, assuming standard 25-mm vertical clearance between layers.