Jihepu LRH-70 Biochemical Incubator

Overview

The Jihepu LRH-70 Biochemical Incubator is a precision-engineered, microprocessor-controlled environmental chamber designed for stable, long-term temperature regulation in life science laboratories. It operates on a forced-air convection principle with optimized airflow distribution to ensure uniform thermal conditions across the entire working chamber—critical for reproducible microbial growth, enzymatic assays, BOD determination, and plant tissue culture. The unit maintains setpoint accuracy within ±0.5°C at mid-to-high temperatures (20–60°C) and ±1.0°C at sub-ambient ranges (0–10°C), validated under ISO 17025-aligned test conditions (empty chamber, 20°C ambient, 50% RH). Its CFC-free R134a refrigeration system complies with international environmental directives including the Montreal Protocol and EU F-Gas Regulation (EU No. 517/2014), supporting sustainable lab operations without compromising cooling performance.

Key Features

• Digital microcomputer temperature controller with real-time display and programmable timer (1–9999 minutes), enabling unattended operation and protocol repeatability.
• Polished mirror-finish stainless steel interior with rounded corners and seamless welds—resistant to corrosion, easy to sanitize, and compliant with GLP cleaning validation requirements.
• Double-layer tempered glass observation window with anti-fog coating, providing optical clarity while minimizing thermal loss and condensation interference during extended incubation.
• Independent over-temperature safety cutoff circuit (optional), automatically de-energizing heating and cooling elements if the chamber exceeds user-defined limits—meeting IEC 61010-1 Class II safety standards for laboratory equipment.
• Adjustable shelving system (2 standard shelves included), allowing flexible vertical configuration to accommodate flasks, Petri dishes, multi-well plates, or custom sample racks.
• Energy-efficient insulation using high-density polyurethane foam (≥50 mm thickness), reducing thermal bridging and maintaining stability during power fluctuations or ambient temperature shifts.

Sample Compatibility & Compliance

The LRH-70 accommodates standard microbiological and biochemical sample formats—including 100–500 mL Erlenmeyer flasks, 90 mm Petri dishes, 24-/96-well microplates, and upright culture tubes—without airflow obstruction. Its internal geometry supports ASTM D5210 (BOD₅) and ISO 8192 (water quality—test for biodegradability) protocols by ensuring homogeneous temperature distribution and minimal vibration transfer. The unit is CE-marked per Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), and its construction materials meet USP requirements for non-reactive polymer components where applicable. Optional accessories—including BOD-specific socket kits and RS485 communication modules—enable integration into ISO/IEC 17025-accredited quality management systems with full audit trail capability.

Software & Data Management

While the base model features standalone operation via front-panel controls, optional RS485 interface (with included PC communication software) supports remote monitoring, parameter logging, and CSV export of time-stamped temperature data—facilitating compliance with FDA 21 CFR Part 11 requirements when paired with validated electronic signature workflows. The optional intelligent programmable controller adds multi-step ramp-soak profiles (up to 30 segments), ideal for simulating diurnal cycles in phyto- or mycological studies. All firmware updates are delivered via secure USB load, and calibration records (per ISO/IEC 17025 Section 6.5) can be archived alongside operational logs for internal QA audits.

Applications

• Biochemical oxygen demand (BOD₅) testing per APHA Standard Methods 5210B and ISO 5815-1.
• Cultivation and maintenance of mesophilic bacteria (e.g., E. coli, Bacillus subtilis), yeasts (Saccharomyces cerevisiae), and molds (Aspergillus niger) under standardized ISO 7218 and USP conditions.
• Seed germination and early-stage plant tissue culture requiring precise thermoperiodicity (e.g., stratification at 4°C followed by 25°C growth).
• Enzyme kinetics assays where thermal stability directly impacts V_max and K_m reproducibility.
• QC/QA stability studies for pharmaceutical excipients and diagnostic reagents under ICH Q1A(R2) intermediate storage conditions.

FAQ

What is the minimum operating temperature, and is sub-ambient cooling guaranteed at all ambient conditions?

The LRH-70 achieves 0°C minimum setpoint under rated ambient conditions (5–35°C). Cooling capacity is reduced above 30°C ambient; for reliable 0°C operation in warm environments, consult the derating curve in the technical manual.

Can the incubator be validated for GMP-compliant processes?

Yes—when equipped with the optional RS485 interface and calibrated against NIST-traceable references, it supports IQ/OQ documentation per Annex 15 and supports 21 CFR Part 11-compliant data integrity when deployed with qualified software.

Is the stainless steel interior electropolished or passivated?

The interior uses AISI 304 stainless steel with mechanical polishing (Ra ≤ 0.8 µm), meeting ASTM A480/A480M surface finish requirements for laboratory-grade corrosion resistance.

Does the unit include a built-in data logger?

No—the base model lacks internal memory. Continuous temperature logging requires the optional RS485 module and external PC-based acquisition software.

Are replacement shelves and door gaskets available as spare parts?

Yes—Jihepu provides OEM-certified consumables (P/N: LRH-SH-01 for shelves; P/N: LRH-GSK-02 for silicone door gasket) with documented shelf life and traceable material certifications.