Yoyilab LRH-70F Biochemical Incubator, 70 L Forced-Air Refrigerated & Heated Incubator

Overview

The Yoyilab LRH-70F is a precision-engineered, forced-air biochemical incubator designed for stable, reproducible temperature control across a broad operational range (0–65 °C). It integrates dual-mode thermal regulation—compressor-based refrigeration and resistive heating—enabling accurate maintenance of sub-ambient, ambient, and elevated temperatures required for microbial cultivation, BOD testing, cell maintenance, and long-term biological sample preservation. Its thermally optimized chamber architecture, combined with PID-controlled microprocessor logic, ensures high spatial uniformity (±1.5 °C at 25 °C) and temporal stability—critical for GLP-compliant environmental monitoring, pharmaceutical QC, and academic life science research. Unlike natural-convection units, the LRH-70F employs a tangential blower system with adjustable airflow distribution to minimize thermal gradients and prevent condensation buildup during low-temperature operation.

Key Features

• Robust construction: Cold-rolled steel exterior with electrostatic epoxy powder coating; mirror-finish stainless-steel interior chamber with radius-corner design for seamless cleaning and contamination control.
• Dual-layer insulated door with high-transparency tempered glass and magnetic seal—maintains thermal integrity during observation without perturbing chamber conditions.
• Intelligent microprocessor controller featuring 5.7-inch backlit LCD interface, supporting multi-parameter real-time display (setpoint, actual chamber temperature, elapsed time, remaining timer duration).
• Advanced PID algorithm with adaptive tuning, offering 0.1 °C resolution and automatic recovery from power interruption—including memory retention of all user-defined parameters and setpoints.
• Comprehensive safety architecture: Independent over-temperature cut-off (hardware-limited), deviation alarm function, and visual/audible alerts for fault conditions (e.g., sensor failure, compressor overload).
• Modular mobility system: Four-position swivel casters with locking brakes and adjustable leveling feet for vibration-dampened placement on laboratory benches or mobile carts.
• Eco-conscious refrigeration: Uses non-ozone-depleting refrigerant compliant with international environmental standards (e.g., EU F-Gas Regulation, EPA SNAP program).

Sample Compatibility & Compliance

The LRH-70F accommodates standard Petri dishes, culture flasks (up to 500 mL), multi-well plates, and BOD bottles—supported by two adjustable stainless-steel shelves with load capacity up to 15 kg per shelf. Its validated temperature performance meets key regulatory benchmarks for routine microbiological work, including ISO 21528-2 (microbial enumeration), ASTM D5210 (BOD₅ testing), and USP (environmental monitoring of cleanrooms). While not certified for IEC 61010-1 Class II or FDA 21 CFR Part 11 out-of-the-box, the unit supports audit-ready data integrity when paired with optional RS485 communication and compliant software (sold separately). All materials in contact with the chamber interior comply with USP Class VI biocompatibility requirements.

Software & Data Management

The LRH-70F operates autonomously via its embedded controller but supports external data acquisition through an optional RS485 serial interface (Modbus RTU protocol). When integrated with Yoyilab’s PC-based monitoring suite (v3.2+), users gain access to time-stamped temperature logging, configurable alarm thresholds, electronic signature support, and 21 CFR Part 11–compliant audit trails—including operator ID, parameter changes, and event timestamps. Optional accessories—including an embedded thermal printer (for immediate hard-copy record generation) and multi-segment programmable controller—extend functionality for complex incubation protocols requiring ramp-hold cycles or diurnal temperature profiles.

Applications

• Biochemical oxygen demand (BOD) analysis per APHA Standard Methods 5210B and ISO 5815-1.
• Cultivation and maintenance of mesophilic bacteria (e.g., E. coli, S. aureus), fungi, yeasts, and molds under controlled aerobic conditions.
• Short-to-medium term storage of clinical specimens, vaccine components, and primary cell isolates at defined stabilization temperatures.
• Environmental simulation studies in ecotoxicology, aquatic biology, and soil microbiology laboratories.
• Plant tissue culture pre-incubation, seed germination trials, and phytopathogen propagation assays.
• QC/QA stability testing of raw materials, excipients, and finished pharmaceutical products per ICH Q1A(R2).

FAQ

What is the difference between the LRH-70 and LRH-70F models?

The “F” suffix denotes compliance with international fluorocarbon restrictions—the LRH-70F uses an environmentally certified refrigerant (e.g., R134a), whereas the base LRH-70 may utilize legacy refrigerants not permitted in certain export markets.
Can this incubator be used for CO₂-sensitive cell cultures?

No. The LRH-70F provides only temperature and air circulation control; it lacks CO₂ regulation, humidity control, or HEPA filtration—features required for mammalian cell culture. It is suitable for bacterial, fungal, and plant-based systems.
Is validation documentation (IQ/OQ/PQ) available?

Yoyilab supplies factory calibration certificates traceable to NIM (National Institute of Metrology, China). Full GxP validation packages—including protocol templates and test records—are available upon request and require on-site execution by qualified personnel.
Does the unit meet electromagnetic compatibility (EMC) requirements for EU laboratories?

Yes. The LRH-70F conforms to EN 61326-1:2013 (measurement/control lab equipment) and carries CE marking for EMC and LVD directives.
What is the maximum ambient temperature for reliable operation?

The specified operating range is +5 °C to +30 °C. Sustained use above 30 °C may compromise cooling efficiency and long-term compressor reliability—installation in climate-controlled rooms is recommended.