LRH-70 Biochemical Incubator – F-Type Eco-Friendly Model with LCD Display

Overview

The LRH-70 Biochemical Incubator is a precision-engineered, benchtop-grade environmental chamber designed for stable, reproducible temperature control in life science laboratories. It operates on the principle of forced-air convection with active heating and eco-friendly refrigeration, enabling accurate maintenance of setpoints across the full operational range of 0–60 °C. As an F-type variant, the LRH-70F integrates R134a and R406a zero-ozone-depletion-potential (ODP) refrigerants—fully compliant with international Montreal Protocol guidelines and aligned with EU F-Gas Regulation (EU No 517/2014) requirements for sustainable laboratory infrastructure. Its application scope spans BOD incubation per ASTM D5210, microbial culture per ISO 8199, mycological growth per USP , and plant tissue pre-incubation under controlled thermal conditions. The unit meets general electrical safety standards IEC 61010-1 and is constructed to support GLP-compliant workflows where traceable, auditable environmental parameters are essential.

Key Features

• Backlit monochrome LCD display with intuitive menu-driven interface—simultaneously shows set temperature, real-time chamber temperature, elapsed time, and timer status.
• Electropolished mirror-finish stainless-steel interior chamber with seamless quarter-radius corners and removable, height-adjustable shelving (2 standard shelves included).
• Eco-optimized dual-refrigerant cooling system (R134a/R406a) delivering enhanced energy efficiency and reduced global warming potential (GWP) versus traditional R12 or R22 systems.
• High-efficiency hermetic compressor paired with proprietary condenser heat-dissipation architecture—designed to extend service life under continuous 24/7 operation.
• JAKEL® axial-flow circulation fan integrated with laminar airflow ducting ensures ≤±0.5 °C spatial uniformity (measured at 9 points per IEC 60068-3-5) at 37 °C, critical for consistent colony formation and metabolic assay reproducibility.
• PID-based digital temperature regulation with adaptive tuning—minimizes overshoot and stabilizes within ±0.1 °C of setpoint under steady-state loading (tested per ISO 17025 calibration protocols).
• Independent over-temperature protection circuit with non-resettable thermal fuse and dual-stage alarm (LED flash + audible tone) meeting IEC 60335-1 Class II safety classification.

Sample Compatibility & Compliance

The LRH-70 accommodates standard Petri dishes (up to 150 mm), multi-well plates (6–96-well), Erlenmeyer flasks (up to 1 L), and sterile glassware without obstruction. Its internal geometry supports simultaneous incubation of heterogeneous sample types—e.g., bacterial cultures on nutrient agar alongside fungal spore suspensions in Sabouraud dextrose broth. The chamber includes a factory-installed 25 mm access port (optional 50 mm upgrade) fitted with silicone grommet for external probe insertion or gas line routing—enabling integration into modified-atmosphere workflows (e.g., low-O₂ or CO₂-supplemented studies). Regulatory alignment includes conformity with GB/T 17288–2021 (Chinese national standard for biochemical incubators), CE marking prerequisites, and compatibility with FDA 21 CFR Part 11–compliant data logging when equipped with optional RS485 interface and validated software.

Software & Data Management

When configured with the optional programmable controller module, the LRH-70 supports up to 15 multi-step temperature profiles (30 total segments), each with independently defined ramp rates, dwell times (1–99 h 59 min), and setpoint values—ideal for simulating diurnal cycles in phyto-studies or staged thermal adaptation in stress-response assays. The USB/RS485 communication interface enables direct connection to Windows-based PCs running vendor-supplied data acquisition software, which records timestamped temperature logs at user-defined intervals (1 s–60 min resolution). Export formats include CSV and PDF reports with embedded digital signatures, supporting audit-ready documentation for ISO/IEC 17025 accreditation or pharmaceutical stability testing per ICH Q1A(R2). All firmware updates are delivered via signed binary packages to ensure integrity verification prior to installation.

Applications

• Biochemical Oxygen Demand (BOD) testing per APHA Standard Methods 5210B and EPA Method 1060.
• Microbial enumeration and isolation—including total viable count (TVC), coliform detection, and antibiotic susceptibility pre-incubation.
• Fungal and yeast culture maintenance under mesophilic (25–30 °C) or thermotolerant (37–42 °C) regimes.
• Seed germination trials, callus induction, and explant pre-conditioning in plant biotechnology labs.
• Enzyme activity assays requiring precise thermal stabilization prior to spectrophotometric analysis.
• Long-term strain preservation at sub-optimal growth temperatures (e.g., 4 °C for short-term bacterial stock holding).

FAQ

Is the LRH-70 certified for use in regulated GMP environments?
The base unit complies with general electrical and mechanical safety standards (IEC 61010-1); however, full GMP validation requires site-specific IQ/OQ/PQ protocols performed by qualified personnel using NIST-traceable reference thermometers and calibrated data loggers.
Can the incubator maintain humidity levels?
No—the LRH-70 is a dry-air convection incubator without active humidification; for moisture-sensitive applications, consider pairing it with external saturated salt chambers or upgrading to a dedicated CO₂/humidity incubator model.
What is the recommended calibration frequency?
Per ISO/IEC 17025 guidance, internal temperature sensors should be verified quarterly using a calibrated reference probe; annual full-system calibration is advised for laboratories maintaining accredited quality management systems.
Does the F-type designation affect performance specifications?
No—refrigerant substitution (R134a/R406a) does not alter temperature range, uniformity, or recovery time; all published technical parameters apply identically to both standard and F-type configurations.
Is remote monitoring supported out-of-the-box?
Remote monitoring is not natively enabled; however, the RS485 interface allows integration with third-party building management systems (BMS) or SCADA platforms via Modbus RTU protocol when configured with appropriate gateway hardware and firmware licensing.