Liebherr SFFvh 4001 Laboratory Cryogenic Refrigerator

Overview

The Liebherr SFFvh 4001 is a high-performance laboratory cryogenic refrigerator engineered for precision temperature control and long-term stability in demanding biomedical and life science environments. Designed specifically for the secure storage of temperature-sensitive biological materials—including vaccines, reagents, clinical samples, and pharmaceutical intermediates—the unit operates within a tightly regulated range of −9 °C to −35 °C. Its forced-air cooling architecture ensures uniform thermal distribution across all storage zones, minimizing vertical and horizontal temperature gradients (≤6.4 °C maximum fluctuation under standard test conditions per DIN 13277). The system employs natural refrigerant R290 (propane), selected for its low global warming potential (GWP = 3), zero ozone depletion potential (ODP = 0), and thermodynamic efficiency—aligning with both environmental compliance mandates and laboratory sustainability objectives. Structural integrity is maintained through a double-walled steel cabinet with white powder-coated finish, while the reinforced door assembly incorporates a dual-key mechanical lock compliant with ISO 27001-aligned physical access control protocols.

Key Features

• Forced-air (fan-assisted) circulation system enabling rapid recovery after door openings and consistent temperature homogeneity throughout the 174 L net storage volume
• NoFrost technology eliminating manual defrost cycles; integrated humidity management removes residual moisture during automated defrost phases
• 2.4-inch full-color touchscreen interface with intuitive navigation, real-time temperature graphing, and configurable alarm thresholds
• Integrated data logger with time-stamped temperature records (±0.5 °C accuracy), exportable via USB or remote retrieval via WiFi/LAN
• LED interior lighting activated upon drawer opening—enhancing sample identification in low-light lab environments without compromising thermal load
• Five adjustable, plastic-coated wire shelves (420 × 400 mm usable area), each rated for 45 kg; total unit static load capacity: 315 kg
• Dual-key mechanical locking mechanism meeting DIN 13277 security requirements for controlled-access biospecimen storage
• Comprehensive alarm suite: audible/visual alerts for power failure (12-hour battery-backed notification), door ajar, temperature deviation, and system fault

Sample Compatibility & Compliance

The SFFvh 4001 is validated for storage of primary and secondary biological specimens, including whole blood, serum, plasma, tissue lysates, monoclonal antibodies, and lyophilized vaccine formulations. Its thermal performance adheres strictly to DIN 13277:2021, which defines test methodologies and acceptance criteria for temperature uniformity, recovery time, and stability under defined ambient conditions (+10 °C to +35 °C). Electrical safety conforms to IEC 61010-2-011:2013 (Edition 3.0), ensuring protection against electric shock, mechanical hazards, and fire risk in laboratory settings. The unit carries CE marking and satisfies essential requirements of the EU Low Voltage Directive (2014/35/EU) and Electromagnetic Compatibility Directive (2014/30/EU). While not certified for ultra-low temperature (−80 °C) applications, its −35 °C capability supports extended stability studies required by USP , WHO Technical Report Series No. 961, and EMA Guideline on Stability Testing.

Software & Data Management

Data integrity and audit readiness are supported through embedded firmware that logs temperature at user-defined intervals (1–60 min), stores ≥12 months of continuous records onboard, and enables encrypted export to CSV or PDF formats via USB. Optional integration with Liebherr’s LabConnect™ platform (via WiFi or LAN) allows centralized monitoring across multi-unit installations, role-based user access control, and automated report generation aligned with GLP and GMP documentation standards. All data entries include immutable timestamps and operator ID tags where network authentication is enabled—supporting compliance with FDA 21 CFR Part 11 requirements for electronic records and signatures when deployed with appropriate validation protocols.

Applications

• Long-term storage of clinical trial biospecimens under ISO 20387-accredited biobanking conditions
• Stability testing of pharmaceutical products per ICH Q5C guidelines at intermediate storage temperatures
• Vaccine cold chain holding at −25 °C to −30 °C prior to distribution, as specified in CDC Vaccine Storage and Handling Toolkit
• Storage of enzyme preparations, restriction enzymes, and other thermolabile molecular biology reagents
• Backup cold storage for −20 °C freezers during maintenance or power contingency scenarios
• Controlled environment for pre-analytical sample processing workflows requiring consistent sub-zero thermal conditioning

FAQ

What is the recommended ambient temperature range for optimal operation?
The unit is validated for continuous operation in ambient conditions between +10 °C and +35 °C, per DIN 13277 test specifications.
Does the SFFvh 4001 support remote monitoring and alarm notifications?
Yes—integrated WiFi/LAN connectivity enables real-time temperature tracking, event logging, and email/SMS alerts via Liebherr LabConnect™ software (license and server infrastructure required separately).
Is the unit suitable for storing flammable solvents or hazardous chemicals?
No. This device is designed exclusively for biological and pharmaceutical materials; it does not meet ATEX or UL 913 requirements for explosion-proof environments.
How frequently does the NoFrost system initiate automatic defrost cycles?
Defrost frequency is adaptive and load-dependent; typical intervals range from 24 to 72 hours under normal usage, with no user intervention required.
Can the internal temperature be calibrated onsite by the user?
Temperature calibration requires traceable reference instrumentation and must be performed by authorized Liebherr service personnel to maintain DIN 13277 conformance and warranty validity.