Hexion HR20M High-Speed Refrigerated Floor-Standing Centrifuge

Overview

The Hexion HR20M is a high-performance floor-standing refrigerated centrifuge engineered for demanding laboratory separation workflows requiring both high rotational speed and precise thermal control. It operates on the principle of sedimentation under controlled centrifugal force—generating up to 48,745 × g at its maximum rated speed of 20,000 rpm—to enable efficient pelleting of subcellular organelles, viral particles, macromolecular complexes, and nanoparticle suspensions. Designed for continuous operation in QC/QA, clinical diagnostics, biopharmaceutical process development, and academic research environments, the HR20M integrates industrial-grade automation architecture with biomedical safety engineering. Its core drive system employs a brushless AC frequency-controlled motor coupled with Mitsubishi programmable logic controller (PLC) technology—certified to EU EMC Directive 2014/30/EU and IEC 61131-2:2007—ensuring electromagnetic compatibility and deterministic real-time response across variable load conditions. The unit maintains stable thermal equilibrium during prolonged runs via an imported non-ozone-depleting refrigeration circuit using R404a, delivering consistent temperature regulation from −20 °C to +40 °C—even while spinning.

Key Features

• High-torque AC frequency-controlled motor with low-noise operation (<65 dB[A] at 20,000 rpm), optimized for reproducible rotor acceleration and deceleration profiles.
• Intelligent refrigeration system featuring pre-cooling, standby cooling, and automatic defrost functions—enabling rapid chamber equilibration and uninterrupted workflow continuity.
• Triple-stage damping mechanism combining mechanical isolation mounts, tuned mass dampers, and proprietary composite shock absorbers—minimizing vibration transmission and preventing sample resuspension during deceleration.
• Weinview touchscreen HMI compliant with NEMA 4 ingress protection and CE electrical safety standards; supports dual-language interface (English/Chinese) and real-time graphical visualization of speed ramp, RCF integral, and chamber temperature curves.
• Biocontainment-certified angular rotors sealed with RoHS 2015/863-compliant silicone gaskets to suppress aerosol generation during high-speed operation—critical for BSL-2 and BSL-3 compatible workflows.
• Mechanical door interlock with positive-latching action ensures secure closure under all operational states; no reliance on solenoid or pneumatic actuation.
• 16 user-programmable protocols with editable parameters mid-run, including independent 10-step acceleration and 10-step deceleration rate control for optimizing pelleting integrity across diverse sample viscosities and densities.

Sample Compatibility & Compliance

The HR20M accommodates a broad range of primary containment formats through interchangeable angular rotors fabricated from aerospace-grade forged aluminum and certified polyamide fiber adapters. Compatible vessels include 1.5 mL microcentrifuge tubes, 15–50 mL conical tubes, 100–1000 mL bottles, and specialized high-capacity carriers (e.g., 6 × 500 mL). All rotors are dynamically balanced per ISO 1940–1 (G2.5 grade) and validated for sustained operation at maximum RCF. The instrument meets essential regulatory requirements for medical device manufacturing and clinical testing laboratories: registered and licensed by China’s National Medical Products Administration (NMPA, formerly CFDA); certified to ISO 9001:2015 (Quality Management Systems) and ISO 13485:2016 (Medical Devices). Its electrical and EMC design conforms to CE marking directives, supporting integration into GLP- and GMP-aligned facilities where audit-ready documentation and traceable calibration records are mandatory.

Software & Data Management

The embedded control firmware provides full-cycle data logging—including timestamped speed, RCF, temperature, elapsed time, and fault events—with export capability via USB port in CSV format. Curve overlays (speed vs. time, RCF integral, temperature drift) support post-run analytical review for protocol optimization and root-cause analysis of separation inconsistencies. While the HR20M does not implement FDA 21 CFR Part 11-compliant electronic signatures or audit trails natively, its event log structure aligns with Annex 11 principles for computerized system validation when deployed within validated laboratory information management systems (LIMS) or electronic lab notebooks (ELN). Protocol storage supports versioning via manual backup, facilitating SOP adherence and change control procedures required under ISO 13485 clause 7.5.3.

Applications

• Preparative isolation of mitochondria, lysosomes, and synaptic vesicles from tissue homogenates.
• Clarification and concentration of monoclonal antibody (mAb) harvest streams prior to chromatographic purification.
• Ultracentrifugal fractionation of extracellular vesicles (EVs) and lipoprotein subclasses (e.g., HDL, LDL, VLDL).
• Routine blood component separation in clinical labs (e.g., serum/plasma preparation, PBMC isolation).
• Nanoparticle synthesis characterization—pelleting and washing of quantum dots, metallic colloids, and polymeric micelles.
• Environmental microbiology workflows involving sedimentation of planktonic bacteria and archaea from aqueous matrices.

FAQ

What is the maximum relative centrifugal force (RCF) achievable with the HR20M?
The HR20M delivers a maximum RCF of 48,745 × g at its top rotational speed of 20,000 rpm with the standard 6 × 500 mL angular rotor.
Does the HR20M support rotor auto-recognition or RFID-based rotor ID?
No—the HR20M requires manual rotor selection and parameter verification via the touchscreen interface; it does not incorporate rotor identification hardware.
Can the temperature be adjusted while the centrifuge is running?
Yes—chamber temperature is fully adjustable in real time during active rotation, with stability maintained within ±1 °C across the full −20 °C to +40 °C range.
Is the HR20M suitable for use with hazardous or infectious samples?
When equipped with RoHS-compliant bioseal rotors and operated within a certified biosafety cabinet or negative-pressure room, the HR20M meets containment requirements for BSL-2 agents; however, it is not rated for BSL-3 aerosol-generating procedures without supplemental engineering controls.
What certifications validate the HR20M for international deployment?
The unit carries CE marking (EMC & LVD), ISO 9001:2015 and ISO 13485:2016 certifications, and NMPA registration—providing foundational compliance for export to ASEAN, GCC, and Latin American markets; additional regional approvals (e.g., UL, CSA, ANVISA) require local conformity assessment.