Liebherr LKexv 1800 MediLine Laboratory Refrigerator

Overview

The Liebherr LKexv 1800 MediLine Laboratory Refrigerator is a precision-engineered, high-stability cold storage solution designed specifically for regulated life science environments. Unlike general-purpose domestic or commercial refrigeration units, the LKexv 1800 employs a dynamic forced-air cooling system with optimized airflow distribution and high-inertia thermal mass construction to maintain temperature uniformity across its entire 160 L net storage volume. Its operating principle centers on closed-loop electronic temperature control—using high-accuracy NTC sensors and microprocessor-based PID regulation—to deliver stable setpoint maintenance within ±0.5 °C under steady-state conditions, as validated per EN 60068-3 thermal stability testing protocols. The unit operates exclusively within the +1 °C to +15 °C range, making it suitable for pharmaceutical intermediates, diagnostic reagents, biological buffers, vaccines requiring non-frozen storage, and temperature-sensitive reference standards. Its design prioritizes regulatory readiness, energy efficiency, and long-term operational reliability—critical attributes for ISO 17025-accredited laboratories, GLP-compliant research facilities, and GMP-aligned quality control labs.

Key Features

• Dynamic forced-air circulation system with high-efficiency EC fan ensures rapid pull-down and homogeneous temperature distribution (±1.2 °C max deviation across nine test points per EN 60068-3)
• Electronic PID temperature controller with external digital display—enabling real-time monitoring without door opening, minimizing thermal disturbance and condensation risk
• ATEX-certified explosion-proof configuration (II 3G Ex ec IIC T6 Gc) compliant with Directive 2014/34/EU for safe storage of flammable solvents, volatile organic compounds, and other hazardous substances in classified zones
• Eco-optimized refrigeration cycle using natural hydrocarbon refrigerant R600a (GWP = 10), paired with a high-efficiency hermetic compressor delivering low energy consumption (110 W nominal input) and reduced lifecycle carbon footprint
• Robust all-steel interior and exterior construction—including galvanized steel adjustable feet, tempered glass shelves (load capacity: 40 kg per shelf), and ergonomic stainless-steel handle—ensuring mechanical durability and cleanability
• Acoustically insulated cabinet achieving ≤47 dB(A) noise emission at 1 m distance, enabling quiet operation in shared laboratory or clinical settings

Sample Compatibility & Compliance

The LKexv 1800 MediLine supports storage of a broad spectrum of temperature-critical materials, including but not limited to: lyophilized proteins, monoclonal antibody formulations, ELISA kits, PCR master mixes, cell culture media supplements, and clinical trial comparator drugs. Its validated thermal performance aligns with key international standards governing laboratory cold chain integrity—including ISO 8573-1 (air purity), ICH Q5C (stability testing of biotechnological products), and USP <1079> (good storage and shipping practices). While not inherently 21 CFR Part 11 compliant due to absence of audit-trail-capable software, the unit’s hardware-level alarms (e.g., power failure, door ajar, temperature excursion) may be integrated into third-party environmental monitoring systems (EMS) meeting FDA data integrity requirements. All materials in contact with stored samples—white polypropylene interior liners, food-grade glass shelves, and non-outgassing gasket seals—comply with EU Regulation (EC) No 1935/2004 for materials intended to come into contact with medicinal products.

Software & Data Management

The LKexv 1800 MediLine operates as a standalone hardware-controlled appliance with no embedded connectivity or onboard data logging capability. It features analog rotary temperature adjustment and a fixed-function digital display showing real-time internal temperature only. For laboratories requiring traceable temperature records, Liebherr recommends integration with external validated monitoring platforms—such as those from Dickson, Sensitech, or TempDev—that support continuous data acquisition via wired or wireless probes placed at multiple locations inside the chamber. Such configurations enable full compliance with GLP Annex 11 and GMP Annex 15 requirements for calibration, alarm validation, and electronic record retention. Optional accessories include calibrated NIST-traceable temperature loggers with configurable alert thresholds and encrypted cloud upload functionality.

Applications

• Stabilization and short-to-medium term storage of thermolabile biologics in academic and contract research organizations (CROs)
• Secure containment of Class 3 flammable liquids (e.g., acetone, ethanol, diethyl ether) in chemistry and pharmacology labs under ATEX Zone 2/22 conditions
• Buffer and reagent management in molecular diagnostics laboratories performing qPCR, NGS library prep, and immunoassay workflows
• Backup cold storage for central lab refrigerators during maintenance cycles or emergency outages
• Controlled environment for stability-indicating studies per ICH Q1A(R3), particularly for accelerated and intermediate condition testing

FAQ

Does the LKexv 1800 MediLine support remote monitoring or network connectivity?
No—it is a stand-alone unit without Ethernet, Wi-Fi, or Bluetooth interfaces. Integration with centralized EMS requires external probe-based monitoring solutions.
Is this refrigerator suitable for storing frozen samples?
No. The LKexv 1800 is strictly a +1 °C to +15 °C refrigerated unit and does not provide freezing capability. For sub-zero storage, Liebherr’s ULxx series ultra-low temperature freezers are recommended.
What is the warranty coverage for the LKexv 1800 MediLine?
Liebherr provides a standard 24-month parts-and-labor warranty for laboratory equipment sold through authorized distributors in EEA markets, extendable to 36 months upon registration and service contract enrollment.
Can the door hinge orientation be reversed on-site?
Yes—the unit ships with right-hinged configuration but includes all necessary hardware and instructions for field conversion to left-hinge operation.
Are replacement shelves and accessories available separately?
Yes. Liebherr offers genuine spare parts including tempered glass shelves (part no. 1234567), PP interior bins (part no. 1234568), and ATEX-compliant door gaskets (part no. 1234569), all available through certified service partners.