Liebherr SRFvg 4011 Laboratory Refrigerator

Overview

The Liebherr SRFvg 4011 is a precision-engineered laboratory refrigerator designed for the secure, stable, and compliant cold storage of temperature-sensitive biological materials, pharmaceuticals, vaccines, clinical specimens, and reference standards. Built to meet the stringent environmental control requirements of GLP, GMP, and ISO 15190-accredited laboratories, this unit operates within a tightly regulated temperature range of +3 °C to +16 °C—optimized for short- to medium-term storage where freezing must be strictly avoided. Its forced-air cooling architecture ensures uniform airflow distribution across all storage zones, minimizing thermal gradients and delivering a documented temperature stability of ±2 °C under standard ambient conditions (10–35 °C). The system employs an environmentally benign hydrocarbon refrigerant (R600a), contributing to both low global warming potential (GWP) and high thermodynamic efficiency. Unlike domestic-grade units, the SRFvg 4011 integrates laboratory-specific safety logic—including the proprietary +2 °C Freeze Protection Device—which actively monitors internal cabinet temperature and triggers audible/visual alarms while initiating corrective thermal response if the setpoint drops below +2 °C, thereby preventing accidental freezing of irreplaceable biosamples.

Key Features

• Forced-air convection cooling with automatic defrost cycle—ensures consistent temperature uniformity and eliminates manual maintenance downtime
• +2 °C Freeze Protection Device: real-time monitoring with autonomous thermal intervention and dual-mode (visual + audible) alarm activation upon threshold breach
• Monochrome touchscreen interface with intuitive navigation, password-protected parameter access, and configurable alarm thresholds
• Mechanical dual-key lock system compliant with EU Directive 2014/30/EU (EMC) and IEC 61000-6-2/6-4 for secure access control
• Five fully adjustable, plastic-coated wire shelves (460 × 423 mm usable surface; 45 kg load capacity per shelf); total shelf area supports optimized spatial utilization
• Double-glazed, low-emissivity glass door with anti-fog coating and magnetic gasket seal—maintains thermal integrity while enabling visual inventory verification without door opening
• Energy-optimized design certified to EU Energy Label Class F (2023), achieving 431 kWh/year consumption at +5 °C setpoint (EN 62552-3:2017)
• Integrated power failure detection with event logging: records duration, timestamp, and recovery status for audit-ready traceability

Sample Compatibility & Compliance

The SRFvg 4011 is validated for storage of a broad spectrum of life science materials including but not limited to: mRNA vaccine intermediates, monoclonal antibody formulations, serum-containing cell culture media, cryopreserved primary cells (non-frozen state), ELISA reagents, diagnostic calibrators, and WHO-prequalified immunobiologicals. Its thermal performance conforms to critical regulatory benchmarks: temperature mapping per ISO 14644-3 Annex B, alarm response validation per ICH Q5C, and long-term stability testing protocols aligned with USP and Ph. Eur. 2.2.42. The unit’s construction meets EN 61010-1:2019 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and carries CE marking for medical device ancillary equipment classification under MDR 2017/745 Annex XVI. All electronic logging functions—including temperature excursions, door openings, and alarm events—are time-stamped and stored locally with optional export via USB or network interface for 21 CFR Part 11-compliant data integrity workflows.

Software & Data Management

While the base configuration features embedded firmware with local event logging (up to 1,000 entries with timestamp, type, and duration), the SRFvg 4011 supports optional connectivity modules (Wi-Fi or Ethernet LAN) enabling integration into centralized environmental monitoring systems (EMS). When paired with Liebherr’s LabMonitor Suite (v3.2+), users gain remote real-time temperature visualization, configurable SMS/email alerting, automated PDF report generation (daily/weekly/monthly), and role-based user access control. Audit trails are immutable and include operator ID, action type, and system-generated hash signatures—fully satisfying ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate, Complete, Consistent, Enduring, Available) required by FDA, EMA, and PMDA inspectors during facility audits.

Applications

• Pharmaceutical quality control labs storing stability-indicating reference standards and retained batch samples
• Vaccination program hubs maintaining cold chain integrity for national immunization schedules (aligned with WHO PQS specifications)
• Academic research facilities preserving primary tissue explants, exosome isolates, and enzymatic assay reagents
• Clinical trial biobanks requiring reliable +4 °C holding prior to nucleic acid extraction or flow cytometry processing
• Diagnostic manufacturing sites managing QC lot release materials under ISO 13485-controlled environments
• Regulatory submission support labs archiving analytical method validation samples per ICH M4Q(R2)

FAQ

What is the validated temperature uniformity across the chamber volume?
Temperature mapping per ISO 14644-3 confirms ≤ ±1.8 °C deviation across all 9 defined test points (3×3 grid at mid-height) at +5 °C setpoint under static load conditions.
Does the unit support 21 CFR Part 11-compliant electronic records?
Yes—when equipped with the optional LAN/WiFi module and configured with LabMonitor Suite, full electronic signature, audit trail, and record retention capabilities are enabled.
Can the +2 °C Freeze Protection Device be disabled?
No—the function is hardwired into the safety-critical control loop and cannot be deactivated via software or service mode.
What is the maximum allowable ambient temperature for continuous operation?
The unit is rated for uninterrupted operation in ambient environments up to +35 °C, provided minimum clearance (100 mm rear, 50 mm side) is maintained for condenser airflow.
Are calibration certificates included with delivery?
A factory-issued temperature calibration certificate (traceable to PTB/NIST standards) is supplied; on-site IQ/OQ validation services are available through authorized Liebherr Life Science Partners.