Shanghai Youyi LRH-250BL Low-Temperature Incubator

Overview

The Shanghai Youyi LRH-250BL Low-Temperature Incubator is an engineered environmental chamber designed for precise, stable thermal control across a wide operational range—from cryogenic preservation at −20 °C to standard microbiological incubation at +65 °C. Built upon a robust compressor-based refrigeration architecture, it delivers consistent temperature uniformity and long-term stability required in regulated life science workflows. Unlike ambient-only incubators, the LRH-250BL integrates dual-mode thermal management—active cooling and resistive heating—enabling seamless transition between sub-zero storage and elevated culture conditions. Its chamber is constructed with mirror-finish stainless steel interior walls, fully welded seams, and radius-corner geometry to minimize microbial harborage and simplify cleaning validation per ISO 14644-1 and CLSI GP35-A4 guidelines. The unit complies with IEC 61010-1:2010 safety standards for laboratory equipment and meets electromagnetic compatibility (EMC) requirements per EN 61326-1.

Key Features

• Microprocessor-controlled PID temperature regulation with auto-tuning, real-time deviation correction, and self-diagnostic startup sequence
• 5.7-inch high-contrast TFT LCD interface supporting multi-parameter display: setpoint, actual chamber temperature, elapsed time, remaining hold duration, and alarm status
• Double-glazed, low-emissivity insulated glass door with anti-fog coating—maintains thermal integrity during visual inspection without disturbing internal conditions
• Three adjustable stainless-steel shelves with load capacity up to 15 kg per shelf; optional fourth shelf available for expanded sample density
• Four-directional casters with locking mechanism and independent leveling feet for vibration-dampened placement on uneven laboratory flooring
• Non-volatile memory retention for all user-defined parameters—including setpoints, timers, and alarm thresholds—ensuring data continuity after power interruption or system reset
• Eco-conscious refrigerant system using R134a/R406a blends compliant with Montreal Protocol Phase-Out schedules and EU F-Gas Regulation (EU) No 517/2014
• Optimized air circulation via high-efficiency axial fan and asymmetric baffle ducting, achieving ≤±0.5 °C spatial uniformity (measured per ASTM E2874-22 Annex A1 at nine-point grid)

Sample Compatibility & Compliance

The LRH-250BL accommodates a broad spectrum of biological and material specimens requiring controlled low-temperature environments: serum and plasma aliquots, lyophilized reagents, primary cell stocks, bacterial and fungal cultures, vaccine formulations, and thermosensitive electronic components. Its stainless-steel chamber supports autoclave-compatible accessory trays and is compatible with common sterilants including 70% ethanol, hydrogen peroxide vapor (HPV), and vaporized peracetic acid. For regulatory traceability, the incubator supports optional RS485/USB interfaces enabling integration into LIMS or ELN systems with audit-trail-capable logging (aligned with FDA 21 CFR Part 11 requirements when paired with validated software). Optional independent over-temperature cut-off (±5 °C deviation threshold) provides mechanical redundancy for GLP/GMP-aligned applications.

Software & Data Management

While the base configuration operates via embedded firmware, the LRH-250BL supports optional connectivity modules: USB data export (CSV format), RS485 Modbus RTU protocol for SCADA integration, and PC-based monitoring software (sold separately). The software enables configurable logging intervals (1–300 seconds), real-time graphing of temperature profiles, automated report generation (PDF/Excel), and event-triggered alerts (e.g., door-open duration >30 s, deviation >0.8 °C for >60 s). All recorded datasets include timestamp, operator ID (if network-authenticated), and instrument serial number—supporting ALCOA+ data integrity principles in quality-controlled laboratories.

Applications

• Long-term cryostorage of clinical biospecimens at −20 °C under CAP-accredited biobanking protocols
• Stabilization and transport conditioning of monoclonal antibodies and recombinant proteins prior to lyophilization
• Environmental stress testing of PCB assemblies per IPC-9701A thermal cycling profiles
• Controlled degradation studies of pharmaceutical excipients under ICH Q1A(R3) accelerated stability conditions
• Low-temperature adaptation assays for psychrophilic microorganisms in marine and polar ecology research
• Pre-conditioning of polymer-based medical device packaging materials prior to peel strength evaluation (ASTM F88)

FAQ

What is the recommended calibration interval for the LRH-250BL?
Annual calibration against NIST-traceable reference thermometers is advised; internal sensor verification can be performed quarterly using a calibrated dry-block calibrator.
Can the unit operate continuously at −20 °C in ambient rooms above 30 °C?
Yes—provided ambient relative humidity remains below 80% RH and ventilation clearance (≥10 cm rear/side, ≥20 cm top) is maintained per installation manual Section 4.2.
Is the chamber suitable for CO₂-enriched environments?
No—the LRH-250BL lacks gas-tight sealing and CO₂-compatible sensors; it is strictly a temperature-controlled, ambient-air environment chamber.
Does the incubator support remote monitoring via Ethernet or Wi-Fi?
Not natively; however, third-party IoT gateways with Modbus TCP translation can be deployed externally to enable cloud-based telemetry when used with the RS485 option.
Are replacement shelves and door gaskets available as spare parts?
Yes—Shanghai Youyi maintains a 10-year spare parts inventory for LRH-series models, including stainless-steel shelves (part #LRH-SH-250B), silicone door seals (part #LRH-GSK-250B), and fan assemblies (part #LRH-FAN-COMP).