Yoyilab LRH-70 Biochemical Incubator
| Brand | Yoyilab |
|---|---|
| Origin | Shanghai, China |
| Manufacturer Type | Direct Manufacturer |
| Model | LRH-70 |
| Cooling Method | Compressor-based cooling |
| Air Circulation | Forced convection |
| Temperature Range | 0–65 °C |
| Temperature Accuracy | ±0.1 °C |
| Temperature Fluctuation | ±0.5 °C (at high setpoints), ±1.0 °C (at low setpoints) |
| Temperature Uniformity | ±1.5 °C (measured at 25 °C) |
| Chamber Capacity | 70 L |
| External Dimensions (W×D×H) | 575×545×1070 mm |
Overview
The Yoyilab LRH-70 Biochemical Incubator is a precision-engineered, microprocessor-controlled environmental chamber designed for stable, long-term cultivation and storage of microorganisms—including bacteria, yeasts, molds, and fungi—as well as for biochemical oxygen demand (BOD) testing, cell maintenance, and plant tissue culture. Operating on dual-mode thermoregulation (compressor-assisted cooling and PTC heating), the unit maintains precise temperature control across its full 0–65 °C range. Its forced-air convection system ensures rapid thermal equilibration and uniform heat distribution within the chamber, minimizing stratification and supporting reproducible experimental conditions essential for GLP-compliant microbiological assays and environmental monitoring protocols.
Key Features
- Robust stainless steel interior with seamless, rounded corners and adjustable stainless steel shelving—optimized for sterility, cleanability, and compatibility with alcohol-based or autoclave-compatible disinfectants.
- Double-glazed, insulated door with silicone gasket seal and low-emissivity inner glass pane—reducing thermal loss during observation and maintaining chamber stability during frequent access.
- Intelligent PID temperature controller with 5.7-inch backlit LCD interface—enabling simultaneous display of setpoint, real-time chamber temperature, elapsed time, and remaining timer duration.
- Power-failure recovery function with non-volatile parameter memory—automatically restoring pre-interruption settings (temperature, timer, alarm thresholds) upon power resumption.
- Dual-level overtemperature protection: primary microprocessor-based limit control + independent mechanical safety cutout—meeting IEC 61000-4-2/4-3 immunity requirements and fulfilling basic electrical safety per EN 61010-1.
- Integrated casters with locking mechanism and leveling feet—facilitating repositioning in shared lab spaces while ensuring vibration-dampened stability during sensitive incubation cycles.
Sample Compatibility & Compliance
The LRH-70 accommodates standard Petri dishes (up to 150 mm), multi-well plates (6–96-well), culture flasks (T25–T175), and BOD bottles (300 mL). Its internal geometry supports staggered shelf loading without airflow obstruction. The unit complies with general laboratory equipment safety standards (EN 61010-1, GB 4793.1) and is suitable for use in environments adhering to ISO/IEC 17025, CLSI M22-A3, and EPA Method 5210B (for BOD incubation). While not certified for medical device manufacturing, it meets baseline requirements for QC microbiology in pharmaceutical water system validation per USP when operated under documented SOPs.
Software & Data Management
The LRH-70 operates autonomously via embedded firmware; optional RS485 serial interface (available as add-on) enables integration with centralized lab monitoring systems (e.g., LabVantage, Siemens Desigo CC) using Modbus RTU protocol. Optional data logging software provides timestamped temperature history export in CSV format, supporting 21 CFR Part 11–compliant audit trails when deployed with validated user authentication and electronic signature modules. No cloud connectivity or proprietary cloud platform is included—data sovereignty remains fully under institutional control.
Applications
- BOD5 determination per APHA Standard Methods 5210B and ISO 5815-1
- Microbial enumeration (total viable count, coliforms, E. coli) in environmental, food, and pharmaceutical water samples
- Fungal spore germination studies and mycotoxin production assays
- Seed germination and early-stage plant tissue culture under controlled thermal regimes
- Storage of lyophilized cultures, reference strains, and diagnostic reagents requiring ambient-to-moderate warming
- Stability testing of biological reagents at elevated temperatures (e.g., accelerated degradation studies)
FAQ
What is the minimum operating ambient temperature for the LRH-70?
The unit is rated for continuous operation in ambient environments between +5 °C and +30 °C. Operation below +5 °C may impair compressor efficiency and extend stabilization time.
Does the LRH-70 support programmable ramp-hold temperature profiles?
Standard configuration includes single-setpoint control with timer function. Multi-segment programming requires the optional external programmable controller (sold separately).
Is the chamber humidity controlled?
No. The LRH-70 is a dry incubator. Humidity control is not integrated; users requiring >60% RH must employ supplemental humidification (e.g., water pans) and monitor via external hygrometer.
Can the LRH-70 be used for CO₂-sensitive cell cultures?
No. It lacks CO₂ regulation, gas-tight sealing, or pH-buffered atmosphere control—intended exclusively for non-CO₂-dependent microbial and biochemical applications.
What calibration documentation is provided?
A factory-verified temperature uniformity report (per ISO 17025-accredited methodology) is supplied with each unit, including NIST-traceable sensor verification at three points (10 °C, 25 °C, 45 °C) under no-load conditions.
