Jihepu KRC-100CL Low-Temperature Biochemical Incubator

Overview

The Jihepu KRC-100CL is a precision-engineered low-temperature biochemical incubator designed for stable, reproducible environmental control in life science laboratories. It operates on a forced-air convection principle with dual-mode thermal regulation—refrigeration via a high-efficiency R134a-based compression cycle and heating via PID-controlled resistive elements—enabling seamless transition across a wide operational range of −10 °C to +65 °C. Unlike ambient-only or high-temperature-only incubators, the KRC-100CL integrates cryogenic capability with microbiological stability requirements, making it suitable for applications demanding sub-zero storage of sensitive reagents, low-temperature microbial cultivation (e.g., psychrophilic strains), extended stability testing of biologics, and controlled-condition storage of sera, antibiotics, and diagnostic media. Its chamber architecture follows ISO 13485-aligned design principles for cleanability and contamination mitigation, including a fully welded 304 stainless steel interior with radius-rounded corners and non-porous surfaces.

Key Features

• Microprocessor-based dual-sensor temperature control system with real-time digital display, offering ±0.1 °C uniformity (measured at 20 °C ambient, 50% RH, no-load condition) and 0.1 °C resolution.
• Imported hermetic compressor and high-reliability refrigeration components ensure long-term operational stability and reduced maintenance intervals.
• Three independently adjustable stainless steel shelves support flexible load configuration; shelf spacing is tool-free and accommodates standard Petri dishes, flasks, and multi-well plates.
• Ø25 mm access port on the left chamber wall enables continuous external monitoring (e.g., thermocouple insertion, gas sampling, or sensor calibration) without compromising internal environmental integrity.
• Energy-optimized R134a refrigerant complies with current EU F-Gas Regulation (EU No 517/2014) and EPA SNAP program requirements, eliminating ozone-depleting substances while maintaining thermal efficiency.
• Robust double-wall insulation with polyurethane foam (≥40 mm thickness) minimizes thermal bridging and reduces power consumption to 1000 W under nominal operating conditions.

Sample Compatibility & Compliance

The KRC-100CL supports diverse sample formats—including glass vials, plastic cryotubes, culture flasks (up to 2 L), agar plates, and sealed serum bottles—without condensation accumulation or cross-contamination risk. Its stainless steel interior resists corrosion from ethanol, isopropanol, and common disinfectants used in GLP-compliant labs. While not certified for IEC 61010-1 Class II or UL 61010B-1 out-of-the-box, the unit meets essential safety prerequisites for laboratory use per EN 61000-6-3 (EMC emission limits) and EN 61000-6-2 (immunity). Optional accessories—including an independent overtemperature cut-off controller (IEC 60730-1 compliant) and GLP-ready data logging interface—enable alignment with FDA 21 CFR Part 11 audit trail requirements when integrated with validated third-party software.

Software & Data Management

The base controller provides local setpoint programming, elapsed time tracking, and alarm history (overtemperature, sensor fault, door open). For advanced traceability, the optional intelligent programmable temperature controller supports up to 16 segment ramp-soak profiles with user-defined rate limits (°C/min), event-triggered data capture, and USB export of timestamped CSV logs. When paired with the optional thermal printer, all critical parameters—including setpoint, actual chamber temperature, deviation, and alarm status—are printed in real time for batch record retention. All firmware revisions are version-locked and documented per ISO/IEC 17025 Clause 5.9.2 for method validation integrity.

Applications

• Low-temperature preservation of hybridoma cell lines and primary neuronal cultures prior to cryopreservation.
• Controlled degradation studies of monoclonal antibodies and vaccine formulations per ICH Q5C guidelines.
• Cultivation of cold-adapted microorganisms (e.g., Pseudomonas fluorescens, Colwellia psychrerythraea) for bioremediation research.
• Stability testing of ELISA kits, PCR master mixes, and lyophilized enzymes under ICH Q1A(R2) intermediate storage conditions.
• Pre-incubation conditioning of biosensors and microfluidic cartridges requiring thermal equilibration below ambient.
• Storage of temperature-sensitive reference standards (e.g., NIST-traceable calibration solutions) in metrology labs.

FAQ

What is the minimum achievable temperature, and how long does it take to reach −10 °C from ambient?
The KRC-100CL achieves −10 °C within approximately 90 minutes when starting from 25 °C ambient, assuming empty chamber and closed door.
Is the unit suitable for CO₂-independent cell culture applications?
Yes—the KRC-100CL maintains only temperature and air circulation; it does not regulate CO₂ or humidity. It is appropriate for short-term storage or non-CO₂-dependent cultures (e.g., insect cells, certain stem cell lines in defined media).
Can the incubator be validated for IQ/OQ/PQ protocols?
Yes—its stable thermal profile, calibrated sensors, and optional data logging interface support full qualification per ASTM E2500-22 and Annex 15 of the EU GMP Guide.
Does the test port compromise chamber seal integrity during operation?
No—the Ø25 mm port includes a removable silicone grommet that restores >99.8% sealing efficiency when unused and permits leak-tight cable/sensor passage when engaged.
Are spare parts and service documentation available internationally?
Jihepu provides English-language technical manuals, wiring schematics, and a global spare parts catalog (compressor assemblies, PID controllers, fan modules) with lead times under 4 weeks via authorized regional distributors.