Shanghai Youyi LRH-300BL Low-Temperature Incubator & Storage Cabinet

Overview

The Shanghai Youyi LRH-300BL is a precision-engineered low-temperature incubator and storage cabinet designed for stable, long-term thermal management across life science, clinical, and industrial R&D environments. Operating on a dual-mode thermoregulatory principle—combining vapor-compression refrigeration with PID-controlled forced-air convection—the unit maintains tightly bounded temperature stability across its full operating range of −20 °C to +65 °C. Unlike ambient or ultra-low temperature freezers, the LRH-300BL bridges the functional gap between cryogenic preservation and standard incubation, supporting applications requiring sub-zero storage without deep-frozen brittleness (e.g., serum stabilization, vaccine integrity maintenance, and cold-adapted microbial culture). Its architecture adheres to core ISO 13485-aligned design principles for medical device-associated laboratory equipment, ensuring consistent thermal performance under variable load conditions and transient power events.

Key Features

• Robust structural construction: Cold-rolled steel outer casing with electrostatic epoxy powder coating; mirror-polished stainless-steel interior chamber with radius-corner geometry for seamless cleaning and contamination control.
• Optimized thermal isolation: Double-glazed inner door with low-emissivity glass and silicone-sealed perimeter—minimizing heat ingress during observation while preserving internal uniformity.
• Intelligent microprocessor control system: 5.7-inch TFT-LCD touchscreen interface supporting multi-parameter real-time display—including setpoint, actual chamber temperature, elapsed time, and remaining hold duration.
• Resilient power management: Built-in parameter memory with auto-recovery function following unexpected power interruption or controller reset—ensuring uninterrupted experimental continuity and data integrity.
• Energy-efficient refrigeration: Uses environmentally compliant R134a/R406a blended refrigerant per Montreal Protocol Annex A guidelines; optimized compressor duty cycling reduces standby power consumption by up to 22% versus legacy units.
• Uniform air distribution: High-efficiency centrifugal circulation fan coupled with asymmetric baffle ducting ensures ≤±0.5 °C spatial deviation across all shelf levels under no-load validation conditions (per ASTM E742-21 test protocol).

Sample Compatibility & Compliance

The LRH-300BL accommodates a broad spectrum of biological and chemical specimens—including liquid sera, lyophilized reagents, primary cell stocks, diagnostic kits, and temperature-sensitive electronic components—without inducing phase separation or polymer degradation. Adjustable stainless-steel shelving (standard configuration: 3 fixed + 23 removable trays) supports flexible load arrangement and ICH Q5C stability testing layouts. The unit complies with GB/T 23789–2009 (Chinese national standard for incubators), meets electromagnetic compatibility requirements per GB 4824–2019 (CISPR 11 Class B), and operates within safety limits defined in GB 4793.1–2019 (IEC 61010-1 equivalent). Optional RS485/USB interfaces enable integration into GLP/GMP audit trails per FDA 21 CFR Part 11 when paired with validated third-party data logging software.

Software & Data Management

While the base configuration includes embedded firmware with local event logging (alarm history, temperature excursions, door-open duration), optional digital modules extend traceability capabilities. The RS485/USB communication port supports Modbus RTU protocol for bidirectional telemetry with SCADA or LIMS platforms. An optional certified data acquisition package provides timestamped CSV export, configurable alarm thresholds, and encrypted audit logs compliant with ALCOA+ principles. Embedded printer integration (optional) delivers hard-copy records suitable for regulatory submission packages in pharmaceutical QC workflows.

Applications

• Clinical sample archiving: Long-term storage of human serum, plasma, and CSF at −20 °C while retaining enzymatic activity and antigenic integrity.
• Vaccine logistics support: Intermediate-temperature staging for mRNA and viral vector formulations prior to final ultra-cold dispatch.
• Microbial strain banking: Maintenance of psychrotolerant bacteria (e.g., Pseudomonas fluorescens, Yersinia enterocolitica) and fungal cultures under controlled cold incubation.
• Material science testing: Thermal aging studies of polymer-based medical devices and adhesives per ISO 11607-1 accelerated aging protocols.
• Environmental simulation: Controlled exposure of sensor electronics and optoelectronic components to cyclic low-temperature stress per MIL-STD-810H Method 502.7.

FAQ

What is the validated temperature uniformity across the 300 L chamber?
Under no-load conditions per ASTM E742-21, the maximum spatial deviation is ±0.5 °C at any point within the working volume when stabilized at −20 °C or +65 °C.
Can the unit operate continuously at −20 °C in ambient rooms exceeding 30 °C?
Yes—its condenser cooling capacity and airflow design are rated for continuous operation at full low-temperature setpoint in ambient environments up to 35 °C and 60% RH.
Is remote monitoring supported out of the box?
Remote monitoring requires optional RS485/USB interface hardware and compatible host software; the base unit does not include Ethernet or Wi-Fi connectivity.
Does the system meet FDA 21 CFR Part 11 requirements for electronic records?
The base controller does not provide Part 11 compliance; however, the optional data acquisition module—with user authentication, electronic signatures, and audit trail encryption—enables full Part 11 alignment when deployed in validated environments.
What is the expected service life of the compressor under normal lab usage?
Based on accelerated lifecycle testing per ISO 5171, the hermetic scroll compressor is rated for ≥30,000 hours of operation at 70% duty cycle, corresponding to approximately 12 years of typical research lab use.