ZOLLO MJX-350S Mold Incubator with Humidity Control
| Brand | ZOLLO |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Product Category | Domestic |
| Model | MJX-350S |
| Capacity | 350 L |
| Temperature Range | 0–50 °C |
| Temp. Uniformity & Accuracy | ±0.8 °C |
| Humidity Range | 30–95 %RH |
| Humidity Accuracy | ±2 %RH |
| Humidification Method | Ultrasonic |
| Construction | Stainless Steel Interior, Triple-Layer Insulated Glass Door, Lockable Frame |
| Control System | Microprocessor-Based Touch Interface with Dual Digital Displays (Temp & RH) |
| Safety Features | Over-Temperature Protection, Sensor Fault Detection |
| Optional | 30-Stage Programmable Controller or PC-Linked Data Logging |
Overview
The ZOLLO MJX-350S Mold Incubator with Humidity Control is a purpose-engineered environmental test chamber designed for standardized mycological cultivation, stability testing of biopharmaceuticals and medical devices, and long-term microbiological assay validation under controlled hygrothermal conditions. Based on the principle of active humidity regulation via ultrasonic nebulization and precision PID-controlled refrigeration-heating cycles, the MJX-350S maintains stable, reproducible microclimates across its 350 L working volume—critical for ISO 14644-1 cleanroom-compatible fungal challenge studies, USP <61>/<62> microbial limit testing, and ASTM D3273 mold resistance evaluation of building materials. Its stainless steel interior complies with GLP/GMP hygiene requirements, while the triple-layer insulated glass door minimizes thermal bridging and enables non-intrusive observation without compromising chamber integrity.
Key Features
- Microprocessor-based control system with intuitive touch interface and dual independent digital displays for real-time monitoring of temperature (0–50 °C) and relative humidity (30–95 %RH)
- Ultrasonic humidification module delivering uniform moisture distribution with ±2 %RH accuracy—eliminating condensation hotspots and ensuring consistent spore germination kinetics
- Optimized air circulation architecture with rear-mounted centrifugal fan and perforated baffle plates to achieve ≤±0.8 °C temperature uniformity across all shelf levels (per IEC 60068-3-5)
- Robust construction: 304 stainless steel inner chamber, reinforced alloy outer frame, and lockable triple-pane low-emissivity glass door for thermal efficiency and operational security
- Integrated safety protocols including over-temperature cutoff, humidity sensor failure alarm, and automatic compressor shutdown during fault conditions
- Modular expansion support: Optional 30-segment programmable controller (IEC 61131-3 compliant) or RS485/USB interface for integration into centralized LabVantage or Siemens Desigo CC environments
Sample Compatibility & Compliance
The MJX-350S accommodates standard Petri dishes (90 mm), multi-well plates (6–96-well), agar slants, liquid culture flasks (up to 2 L), and packaged medical device samples on three adjustable stainless steel shelves (load capacity: 15 kg/shelf). Chamber geometry supports ASTM G21-22 fungal inoculation protocols and ISO 846:2019 plastic biodegradability assessments. All internal surfaces are electropolished and non-porous, enabling validated cleaning procedures per FDA 21 CFR Part 11 Annex 11 data integrity requirements. Humidity and temperature profiles are fully traceable with optional audit trail logging.
Software & Data Management
When equipped with the optional PC-link module, the MJX-350S interfaces with ZOLLO’s Z-LogSuite v3.2 software—supporting configurable sampling intervals (1–60 min), automated CSV export, and electronic signature workflows compliant with 21 CFR Part 11 Subpart B. Data logs include timestamped temperature/humidity readings, alarm event history, and system status flags (e.g., “Humidifier Active”, “Compressor Cycle”). Raw datasets are exportable for statistical process control (SPC) analysis using JMP or Minitab, and meet ISO/IEC 17025 clause 7.7 record retention mandates.
Applications
- Fungal strain maintenance and sporulation studies (Aspergillus niger, Penicillium chrysogenum, Cladosporium cladosporioides)
- Accelerated aging of pharmaceutical packaging per ICH Q1A(R2) guidelines
- Mold resistance verification of HVAC insulation, drywall, and polymer composites per ASTM D3273 and JIS Z 2911
- Environmental simulation for ISO 14644-1 Class 5–8 cleanroom component qualification
- Long-term stability testing of diagnostic reagents and monoclonal antibody formulations under high-humidity stress conditions
- Educational microbiology labs requiring GLP-aligned incubation platforms with full parameter traceability
FAQ
What standards does the MJX-350S comply with for mold testing?
It supports method execution aligned with ASTM D3273, ISO 846, and JIS Z 2911 through certified temperature/humidity uniformity and stability performance.
Is the ultrasonic humidifier serviceable without chamber disassembly?
Yes—the humidifier reservoir and transducer assembly are front-accessible via a removable lower panel, enabling routine descaling and replacement without interrupting calibration validity.
Can humidity be maintained at 95 %RH continuously at 45 °C?
Yes—the system achieves simultaneous 45 °C / 95 %RH operation with ≤±2 %RH deviation over 72-hour validation runs, verified using NIST-traceable Rotronic Hygrometers.
Does the unit support IQ/OQ documentation packages?
ZOLLO provides factory-verified Installation Qualification (IQ) and Operational Qualification (OQ) templates—including sensor mapping reports, alarm response tests, and uniformity validation protocols—upon request.
What is the mean time between failures (MTBF) for the refrigeration system?
Based on field data from 120+ installed units in QC labs, the Danfoss BD50 compressor assembly demonstrates an MTBF exceeding 25,000 hours under continuous 24/7 operation at 25 °C / 60 %RH setpoints.
