Duling DL-3024HR High-Speed Refrigerated Centrifuge

Overview

The Duling DL-3024HR is a floor-standing high-speed refrigerated centrifuge engineered for precision separation of biological and biochemical samples requiring both elevated rotational forces and precise temperature control. Operating on the principle of sedimentation under centrifugal acceleration, the instrument utilizes a brushless AC frequency-controlled motor to deliver stable, low-vibration rotation across its full speed range (up to 24,000 rpm), generating a maximum relative centrifugal force (RCF) of 40,217 × g. Its integrated refrigeration system maintains sample temperatures between –20 °C and +40 °C during operation—critical for preserving labile macromolecules, organelles, and microbial integrity. Designed for routine and demanding applications in life science laboratories, the DL-3024HR supports reproducible differential centrifugation protocols via its proprietary DCT (Differential Centrifugation Technology), enabling sequential isolation of subcellular fractions without rotor exchange.

Key Features

• Brushless AC frequency-controlled motor ensures high-speed stability, minimal mechanical wear, and ultra-low operational noise (<65 dB(A) at maximum speed)
• True-color 7-inch TFT LCD touchscreen interface with intuitive icon-based navigation and multilingual support (English, Spanish, French, Chinese)
• Microprocessor-based control system with real-time display of simultaneous parameters: rpm, RCF, time remaining, temperature, and acceleration/deceleration profile
• Programmable method storage for up to 99 user-defined protocols, each supporting independent ramp-up/ramp-down profiles (soft start, linear, stepwise)
• DCT-enabled dual-parameter mode: concurrent setting and monitoring of both rpm and RCF, with automatic cross-conversion and validation against rotor-specific calibration curves
• Active refrigeration with PID-controlled compressor system and pre-cool function (reaches –20 °C in ≤15 min from ambient)
• Robust safety architecture: automatic rotor recognition, imbalance detection (±3 g tolerance), lid interlock with dual mechanical/electronic sensors, and emergency brake with kinetic energy dissipation

Sample Compatibility & Compliance

The DL-3024HR accommodates standard horizontal rotors compatible with 15 mL, 50 mL conical tubes, 100 mL bottles, and custom 750 mL containers—supporting batch processing of clinical, environmental, and industrial samples. Its design adheres to IEC 61010-1:2010 (Safety Requirements for Electrical Equipment for Measurement, Control, and Laboratory Use) and ISO 13485:2016 (for medical device-related quality management systems). The unit meets electromagnetic compatibility (EMC) requirements per EN 61326-1 and complies with RoHS Directive 2011/65/EU. While not FDA-cleared as a medical device, it supports GLP/GMP-aligned workflows through audit-trail-ready operation logs and protocol traceability—making it suitable for QC labs operating under ISO/IEC 17025 or CLIA guidelines.

Software & Data Management

Data integrity is maintained through built-in non-volatile memory that logs every run—including date/time stamp, rotor ID, set parameters, actual performance metrics (peak RCF, final temperature, vibration amplitude), and any fault events. Optional USB export enables transfer of CSV-formatted run records for LIMS integration or statistical analysis in Excel or JMP. No proprietary software installation is required; all configuration and reporting are handled natively via the onboard interface. For regulated environments, optional firmware upgrade supports 21 CFR Part 11-compliant electronic signatures and role-based access control (admin/operator modes), ensuring accountability and data authenticity throughout the analytical lifecycle.

Applications

• Cell fractionation workflows: isolation of nuclei, mitochondria, lysosomes, and microsomes using stepwise DCT protocols
• Clinical microbiology: concentration of low-abundance pathogens from blood, urine, or stool supernatants prior to PCR or culture
• Food safety testing: rapid pelleting of Salmonella, Listeria, or E. coli from enrichment broths
• Environmental monitoring: recovery of planktonic bacteria and algae from water matrices for metagenomic sequencing
• Vaccine development: clarification of viral vectors and purification intermediates under cold-chain conditions
• Academic research: scalable preparation of exosomes, ribonucleoprotein complexes, and membrane vesicles from cell culture supernatants

FAQ

What is the minimum temperature achievable during operation?
The refrigeration system maintains a stable setpoint range from –20 °C to +40 °C, with typical stabilization at –20 °C within 15 minutes after pre-cool activation.
Does the DL-3024HR support fixed-angle rotors?
No—the DL-3024HR is configured exclusively for horizontal (swinging-bucket) rotors to optimize pelleting uniformity and sample volume flexibility up to 750 mL per position.
Is rotor calibration required before first use?
Yes. Each rotor must be registered via the touchscreen interface using its engraved serial number; the system then loads certified RCF vs. rpm curves validated per ISO 21501-4.
Can the centrifuge operate without refrigeration?
Yes. The cooling system can be disabled independently, allowing ambient-temperature high-speed runs while retaining all other control and safety functions.
What documentation is provided for regulatory compliance?
A comprehensive technical file—including Declaration of Conformity (DoC), test reports for IEC 61010-1 and EN 61326-1, rotor certification documents, and user manual with maintenance schedules—is supplied with each unit.