Duling DL-3021HR High-Speed Refrigerated Benchtop Centrifuge
| Brand | Duling |
|---|---|
| Origin | Anhui, China |
| Manufacturer Type | Authorized Distributor |
| Product Category | Domestic |
| Model | DL-3021HR |
| Instrument Type | Benchtop Centrifuge |
| Speed Range | High-Speed (10,000–30,000 rpm) |
| Function | Refrigerated Centrifuge |
| Configuration | Horizontal Rotor |
| Separation Level | Cellular & Bacterial |
| Maximum Capacity | 6 × 100 mL |
| Maximum Speed | 23,000 rpm |
| Maximum RCF | 36,795 × g |
| Dimensions (L×W×H) | 570 × 590 × 490 mm |
Overview
The Duling DL-3021HR is a high-performance refrigerated benchtop centrifuge engineered for precise, reproducible separation of biological suspensions under controlled thermal conditions. It operates on the principle of sedimentation acceleration via rotational force—generating relative centrifugal force (RCF) up to 36,795 × g at its maximum speed of 23,000 rpm. Designed for routine and research-grade applications in clinical diagnostics, microbiology, molecular biology, and cell culture laboratories, the DL-3021HR maintains sample integrity through active refrigeration (typically −20 °C to +40 °C range, with rapid pre-cooling capability), minimizing thermal degradation during high-speed runs. Its horizontal rotor configuration enables uniform pelleting across six 100 mL tubes—ideal for harvesting bacterial cells, mammalian cells, subcellular organelles, or precipitated nucleic acid complexes.
Key Features
- Refrigerated operation with microprocessor-controlled temperature regulation (±1 °C accuracy) and independent cooling circuit—ensuring consistent thermal environment regardless of ambient conditions or run duration.
- Brushless frequency-controlled motor delivering high torque at elevated speeds, optimized for extended operational stability and low mechanical noise (<65 dB(A) at full load).
- Intelligent rotor recognition system that automatically identifies installed rotor type and enforces speed/RCF limits per ISO 21501-2 safety compliance protocols.
- Programmable multi-step protocols supporting ramp-up/down profiles, hold time at target speed, and automatic brake release—enabling reproducible workflows compliant with GLP documentation requirements.
- Robust stainless-steel chamber with corrosion-resistant interior coating and sealed rotor cavity to prevent condensation ingress and cross-contamination.
- Emergency lid-locking mechanism with dual-sensor interlock and automatic deceleration upon lid opening—meeting IEC 61010-2-020 safety standards for laboratory equipment.
Sample Compatibility & Compliance
The DL-3021HR accommodates standard conical-bottom polypropylene or polycarbonate centrifuge tubes (15–100 mL), as well as swing-out buckets compatible with round-bottom tubes and sealed safety cups. It supports common biosafety level 2 (BSL-2) workflows and is validated for use with aqueous buffers, saline solutions, glycerol gradients, and ethanol-based precipitation mixtures. The unit complies with ISO 13485 (for medical device-related applications), EN 61010-1 (safety), and EN 61326-1 (EMC). While not certified for GMP manufacturing environments, its audit-ready operation log and password-protected parameter locking align with FDA 21 CFR Part 11 expectations for electronic record integrity in regulated QC labs.
Software & Data Management
Equipped with an embedded 4.3-inch TFT LCD touchscreen interface, the DL-3021HR provides intuitive navigation through user-defined programs, real-time RCF/speed conversion, and dynamic run-time estimation. All operational parameters—including speed, time, temperature, RCF, and rotor ID—are timestamped and stored internally for up to 1,000 cycles. Data export is supported via USB 2.0 port (CSV format), enabling integration into LIMS platforms or Excel-based QA reporting systems. Optional PC software (Duling CentriControl v3.2) offers remote monitoring, batch protocol deployment, and automated PDF report generation with digital signature fields for SOP adherence.
Applications
- Harvesting bacterial cultures (e.g., E. coli, Bacillus subtilis) prior to lysis and protein extraction.
- Isolation of peripheral blood mononuclear cells (PBMCs) using Ficoll-Paque density gradients.
- Clarification of lysates in plasmid DNA purification workflows (e.g., alkaline lysis followed by neutralization and centrifugation).
- Preparation of viral supernatants from transfected HEK293 or Vero cell lines.
- Routine serum/plasma separation in clinical chemistry and immunoassay sample preparation.
- Concentration of extracellular vesicles (EVs) via sequential ultracentrifugation steps when used with compatible swing-bucket rotors.
FAQ
What is the minimum required clearance around the centrifuge for ventilation?
A minimum of 10 cm clearance on all sides—and 20 cm above the unit—is required to ensure adequate airflow for compressor cooling and motor heat dissipation.
Can the DL-3021HR be operated without refrigeration enabled?
Yes; the unit supports ambient-temperature operation with refrigeration disabled, though temperature-sensitive samples are not recommended under this mode.
Is rotor balancing mandatory before each run?
Yes—imbalanced loads exceeding ±0.5 g per opposing position may trigger automatic shutdown to prevent mechanical stress and ensure bearing longevity.
Does the centrifuge support continuous operation over multiple consecutive runs?
It is rated for duty cycle operation up to 8 hours/day; however, a 15-minute cooldown interval is advised between successive maximum-speed runs to maintain thermal stability.
Are third-party rotors or adapters compatible with the DL-3021HR?
Only Duling-certified horizontal rotors and bucket assemblies are supported; use of non-OEM components voids warranty and compromises safety certification compliance.
