Hettich DD5M Low-Speed High-Capacity Refrigerated Centrifuge

Overview

The Hettich DD5M is a floor-standing, refrigerated low-speed centrifuge engineered for high-throughput sample processing in regulated laboratory environments. Operating on the principle of sedimentation under controlled gravitational force (RCF), it delivers precise, reproducible separation of biological suspensions, cell pellets, serum, plasma, whole blood, tissue homogenates, and industrial emulsions. Designed for continuous operation in quality control laboratories, clinical diagnostics, biobanking, food safety testing, and agricultural research, the DD5M integrates robust mechanical architecture with thermally stable refrigeration—enabling consistent temperature maintenance during extended runs. Its maximum capacity of 6 × 500 mL in horizontal rotors supports large-volume batch processing without compromising rotor balance or thermal uniformity, while its 5,000 rpm operational ceiling ensures sufficient RCF (up to 4,800 × g) for routine low-speed applications such as erythrocyte sedimentation rate (ESR), platelet-rich plasma (PRP) preparation, and polymer precipitation.

Key Features

• AC brushless motor system with Infineon power driver and proprietary control board—ensuring torque consistency, low acoustic emission (<62 dB(A) at 5,000 rpm), and long-term rotational stability.
• Imported non-azeotropic refrigeration unit using R404a refrigerant, compliant with EU F-Gas Regulation and RoHS 2015/863; enables rapid pre-cooling and active temperature hold during idle periods.
• Triple-stage mechanical damping combined with composite vibration isolation mounts—minimizing sample resuspension and extending rotor bearing life.
• TFT-LCD full-color display with dual-input interface (touchscreen + tactile keys); real-time simultaneous display of setpoints (speed, time, temperature, RCF) and actual running parameters.
• Biological containment design: hermetically sealed rotor chamber with integrated silicone gasket (RoHS-certified), preventing aerosol escape during high-biomass centrifugation.
• AISI 304 stainless-steel centrifuge chamber, powder-coated structural frame, and triple-layer reinforced front housing—meeting IEC 61010-1 mechanical safety requirements for Class II equipment.
• Electromechanical door lock with auto-engagement—eliminates manual latching and provides positive interlock verification prior to rotor acceleration.
• Programmable acceleration/deceleration profiles (10 steps each), 20 user-defined protocol slots, and on-the-fly parameter adjustment without interrupting active runs.

Sample Compatibility & Compliance

The DD5M accommodates standard polypropylene, polycarbonate, and glass centrifuge bottles (up to 500 mL) in fixed-angle and swing-bucket configurations. It supports ISO/IEC 17025-compliant workflows through traceable calibration records, audit-ready parameter logging, and built-in system diagnostics. Regulatory compliance includes CFDA registration (Class II medical device), ISO 9001:2015 (quality management), and ISO 13485:2016 (medical device manufacturing). While not FDA 21 CFR Part 11–validated out-of-the-box, the instrument’s data integrity framework—including timestamped event logs, password-protected access levels, and non-erasable run history—facilitates validation under GLP/GMP or CAP/CLIA environments when integrated with validated LIMS platforms.

Software & Data Management

The embedded firmware records all operational events—including start/stop timestamps, rotor ID detection, temperature deviations, imbalance alerts, and energy consumption metrics—in a non-volatile memory buffer. Data export is supported via USB 2.0 port in CSV format, compatible with common laboratory informatics systems. The interface supports multi-language localization (English, Chinese, Russian, Portuguese) to accommodate multinational research teams. Optional Ethernet connectivity (via third-party gateway) enables remote monitoring and centralized fleet management in core facility settings.

Applications

• Clinical laboratories: Serum/plasma separation, blood bank component processing, ESR assays.
• Pharmaceutical QC: Excipient suspension clarification, vaccine antigen pelleting, dissolution media filtration support.
• Food & beverage testing: Microbial pellet recovery, fat globule separation, pesticide residue extraction.
• Agricultural research: Soil extract clarification, plant protoplast isolation, seed oil fractionation.
• Academic & industrial biotech: Large-scale cell harvesting (e.g., CHO, HEK293), yeast/bacterial biomass concentration, extracellular vesicle pre-enrichment.

FAQ

What is the maximum RCF achievable with the DD5M, and at what radius?
The DD5M achieves a maximum relative centrifugal force of 4,800 × g when operating at 5,000 rpm with the standard 6 × 500 mL horizontal rotor (maximum radius = 225 mm). RCF values are automatically calculated and displayed in real time based on selected rotor geometry.
Does the DD5M support rotor auto-recognition?
Yes—the system identifies installed rotors via embedded RFID tags or mechanical coding, automatically limiting speed and temperature ranges per rotor specifications to prevent over-speed or thermal mismatch.
Is the refrigeration system suitable for overnight operation?
Yes. The compressor-based cooling system maintains setpoint temperature within ±1.5 °C during continuous operation up to 96 hours, verified per ISO 13485 environmental stability testing protocols.
Can the DD5M be integrated into a laboratory automation workflow?
While native LIS/LIMS integration is not included, the instrument’s USB data export and standardized CSV schema allow seamless ingestion into ELN or SDMS platforms via script-based pipelines or middleware adapters.
What documentation is provided for IQ/OQ validation?
A comprehensive validation support package—including factory calibration certificates, mechanical safety test reports, temperature uniformity mapping data (per ISO 13485 Annex A), and electronic operation manuals—is supplied with each unit.