Xiangyi DD-5M Floor-Standing Low-Speed Centrifuge

Overview

The Xiangyi DD-5M is a robust, floor-standing low-speed centrifuge engineered for high-capacity, routine separation tasks in clinical, environmental, and industrial laboratories. Operating on the principle of sedimentation under controlled gravitational force (RCF), it delivers reproducible separation of large particulates—including whole cells, organelles, precipitated proteins, and viral particles—without inducing shear-induced damage typical of high-speed or ultracentrifugation. Its design prioritizes operational stability at moderate rotational speeds (up to 5000 rpm), making it especially suited for applications requiring gentle yet efficient pelleting or clarification of viscous or volume-intensive samples—such as municipal wastewater sludge, serum/plasma processing, crude cell lysates, and biopharmaceutical harvest streams.

Key Features

• Brushless AC frequency-controlled motor: Eliminates carbon brush wear and associated particulate contamination; ensures consistent torque delivery across the full speed range and extends service life beyond 20,000 operating hours.
• Modular rotor system: Supports seven interchangeable rotor families—including fixed-angle, horizontal swing-out, microplate, and specialized water-treatment configurations—each mechanically coded for automatic recognition and speed-limited operation per ISO 21501-4 compliance.
• Programmable touchscreen interface: Enables precise user-defined protocols with independent control of speed (rpm), time (1–99 min), and relative centrifugal force (RCF); stores up to 100 custom methods with timestamped execution logs.
• Dual-stage damping suspension: Combines elastomeric mounts and dynamic counterbalance to suppress vibration during acceleration/deceleration, maintaining ≤65 dB(A) acoustic emission even at maximum load—critical for shared lab environments and GLP-compliant facilities.
• Comprehensive safety architecture: Integrates lid interlock with force-sensing latch, real-time overspeed monitoring, rotor imbalance detection (<±2 g mass differential), thermal cutoff, and a triple-layer containment system comprising 304 stainless steel inner chamber, reinforced polymer outer housing, and sealed base enclosure.

Sample Compatibility & Compliance

The DD-5M accommodates a broad spectrum of sample formats—from standard conical tubes (15–500 mL), evacuated blood collection tubes (7–15 mL), and multiwell plates (96-well ELISA, 384-well assay plates) to industrial-scale containers (750 mL bottles, 400 mL cylindrical vessels). Its horizontal rotors feature optional gas-tight sealing for volatile or biohazardous samples, meeting OSHA 29 CFR 1910.1200 and CLSI GP35-A4 containment requirements. All rotor assemblies comply with ISO 15195:2020 for centrifuge performance verification, and the instrument’s firmware supports audit-trail generation per FDA 21 CFR Part 11 when connected to validated LIMS networks.

Software & Data Management

While the DD-5M operates as a standalone unit, its embedded controller logs all run metadata—including date/time stamp, rotor ID, set parameters, actual RCF achieved, energy consumption, and fault codes—in non-volatile memory. Optional USB export enables traceable data transfer to laboratory information systems (LIS) or electronic lab notebooks (ELN). Firmware updates are delivered via encrypted USB key, with version history and change logs retained for regulatory review. No cloud connectivity or remote access is implemented—ensuring data sovereignty and alignment with EU GDPR and HIPAA physical safeguards.

Applications

• Environmental testing labs: Clarification of activated sludge, sediment analysis in water quality monitoring, and suspended solids recovery from effluent streams.
• Blood banking & transfusion services: Separation of packed red blood cells (PRBCs), platelet-rich plasma (PRP), and cryoprecipitate from whole blood units using standardized AABB-compliant protocols.
• Biopharmaceutical manufacturing: Harvest of mammalian or microbial cell cultures prior to downstream chromatography; clarification of monoclonal antibody (mAb) harvests containing host cell proteins (HCPs) and DNA.
• Clinical diagnostics: Routine serum/plasma preparation for immunoassays, coagulation panels, and therapeutic drug monitoring (TDM).
• Academic research: Subcellular fractionation of mitochondria, nuclei, and lysosomes from tissue homogenates; isolation of extracellular vesicles (EVs) in early-stage workflows.

FAQ

What is the maximum certified RCF for the DD-5M, and how is it verified?
The maximum certified RCF is 3660 ×g, achieved with Rotor No.6 (4 × 250 mL) at 4000 rpm. Verification follows ISO 15195 Annex B using NIST-traceable tachometers and calibrated RCF calculators.
Does the DD-5M support GMP/GLP documentation requirements?
Yes—its onboard audit trail, rotor-specific speed limiting, and non-erasable run logs satisfy core elements of FDA 21 CFR Part 11 and EU Annex 11 for electronic records in regulated environments.
Can I use third-party rotors or adapters with this centrifuge?
No. Only Xiangyi-certified, mechanically coded rotors and accessories are permitted to ensure mechanical integrity, speed validation, and safety interlock functionality.
What maintenance intervals are recommended for routine operation?
Daily visual inspection of lid seal and rotor threads; quarterly calibration of speed and timer accuracy by authorized service technician; annual full preventive maintenance including bearing assessment and damping system evaluation.
Is the DD-5M suitable for continuous operation in 24/7 production environments?
It is rated for intermittent duty (IEC 61800-5-1 Class H insulation, 30% duty cycle). For unattended overnight runs, use only pre-validated protocols with automatic brake disable and temperature monitoring disabled (no refrigeration).