Herx LR6M Floor-standing High-Capacity Refrigerated Centrifuge

Overview

The Herx LR6M is a floor-standing, high-capacity refrigerated centrifuge engineered for reproducible, low-speed separation of large-volume biological and industrial samples under precisely controlled thermal conditions. Designed around Couette-flow sedimentation principles, it delivers consistent gravitational forces up to 5167 ×g at 4200 rpm—optimized for pelleting large subcellular components including mitochondria, lysosomes, microsomes, and enveloped viruses, as well as for phase separation in food, dairy, petrochemical, and biopharmaceutical processing. Its robust architecture integrates a high-torque AC frequency-converter motor, a CFC-free R404a refrigeration system, and a thermally insulated 304 stainless-steel rotor chamber, enabling stable operation across the full temperature range of –20 °C to +40 °C—even during extended runs exceeding 99 hours. Unlike benchtop units, the LR6M’s structural rigidity, reinforced steel chassis, and integrated leveling system minimize vibration transmission, ensuring long-term mechanical stability in shared laboratory environments.

Key Features

• High-torque AC frequency-converter motor with ±50 rpm speed accuracy and 10-step programmable acceleration/deceleration profiles for gentle sample handling and reduced resuspension risk.
• CFC-free R404a refrigeration system featuring pre-cooling, standby cooling, and auto-defrost functions—enabling rapid thermal equilibration and uninterrupted temperature maintenance between runs.
• Industrial-grade control architecture: Mitsubishi PLC compliant with EU EMC Directive 2014/30/EU and IEC 61131-2:2007; Weintek HMI touchscreen certified to NEMA 4 and CE electrical safety standards.
• TFT-LCD true-color display with multilingual interface (English/Chinese), real-time overlay of setpoints vs. actual values (speed, RCF, temperature, time), and graphical plotting of speed ramping, cumulative centrifugation time (k-factor integration), and thermal profiles.
• Triple-layer safety design: 304 stainless-steel centrifuge chamber, powder-coated steel housing, and triple-reinforced front panel with mechanical interlock door latch meeting IEC 61010-2-020 requirements for centrifuge safety.
• Four-point adjustable leveling feet with heavy-duty casters facilitate precise horizontal alignment and safe relocation within GMP-compliant facility corridors or cold-room installations.

Sample Compatibility & Compliance

The LR6M accommodates standard 6-position horizontal rotors supporting 1000 mL bottles (e.g., Corning 430829, Thermo Fisher Nunc 371120), as well as optional swing-bucket configurations for 500 mL conical tubes or plate carriers. It is validated for use in clinical diagnostics (blood component separation per CLSI H26-A3), vaccine manufacturing (viral vector clarification per USP ), and food-grade fat separation (AOAC 985.25). Regulatory documentation includes CFDA registration (Class II medical device), ISO 13485:2016 certification for medical device quality management, and ISO 9001:2015 certification. The control system supports audit-trail generation for GLP/GMP environments, with timestamped parameter logs exportable via USB—compatible with 21 CFR Part 11–aligned data integrity workflows when deployed with validated LIMS integration.

Software & Data Management

No proprietary software installation is required: all operational parameters, run histories, and alarm logs are stored locally on the embedded controller with non-volatile memory retention (>10,000 cycles). Timestamped event logs include rotor ID, speed deviation, temperature excursion, imbalance detection events, and door interlock status—each tagged with UTC time and operator ID (via optional RFID badge reader). Data export is supported in CSV format via USB 2.0 port, preserving traceability for internal QA review or regulatory submission. Firmware updates are performed offline using signed binary packages to ensure integrity; version history and checksums are displayed in the service menu for verification prior to installation.

Applications

• Clinical & Public Health: Large-volume plasma fractionation, whole-blood buffy coat isolation, pathogen concentration from environmental water samples (e.g., Cryptosporidium oocysts per EPA Method 1623.1).
• Biopharmaceutical Manufacturing: Harvest of mammalian cell cultures (CHO, HEK293), clarification of viral vectors (AAV, lentivirus), and downstream purification of extracellular vesicles (EVs) per MISEV2018 guidelines.
• Food & Agriculture: Cream separation in dairy processing, oil extraction from plant biomass (e.g., olive paste, algae), and sediment analysis in wine and juice stabilization.
• Industrial Chemistry: Catalyst recovery in petrochemical refining, polymer latex fractionation, and heavy metal precipitate removal from electroplating effluents.

FAQ

What rotor types are compatible with the LR6M?
The LR6M is supplied with a fixed-angle 6 × 1000 mL horizontal rotor. Optional swing-bucket rotors (6 × 500 mL, 4 × 1000 mL) and plate carriers (2 × 96-well deep-well plates) are available under separate part numbers and require rotor-specific calibration certificates.
Does the LR6M support remote monitoring or network connectivity?
No Ethernet or Wi-Fi interface is built-in. Remote status interrogation requires manual USB data retrieval. Integration with centralized building management systems (BMS) is possible via dry-contact alarm outputs (fault, door open, temperature deviation) wired to third-party SCADA platforms.
Is the R404a refrigerant compliant with current F-gas regulations in the EU?
R404a is permitted for servicing existing equipment under EU Regulation (EU) No 517/2014, though its GWP restricts new installations after 2025. Herx provides technical documentation supporting transitional use in laboratories where replacement timelines align with national phase-down schedules.
Can the LR6M be installed in a cold room?
Yes—the unit operates reliably at ambient temperatures from +10 °C to +32 °C and relative humidity ≤80% non-condensing. External condensate drainage must be routed outside the cold room; ambient air intake grilles should remain unobstructed.
What documentation is provided for IQ/OQ validation?
A complete validation package—including Factory Acceptance Test (FAT) report, calibration certificate for speed/temperature sensors (NIST-traceable), and blank IQ/OQ protocol templates aligned with ASTM E2500 and Annex 15—is included with each shipment.