Drick DRK-TDL5E Benchtop Low-Speed Refrigerated Centrifuge

Overview

The Drick DRK-TDL5E is a benchtop low-speed refrigerated centrifuge engineered for routine separation tasks requiring precise temperature control and reliable rotational stability. It operates on the principle of sedimentation under controlled gravitational force (RCF), enabling effective separation of heterogeneous mixtures—including cell suspensions, serum/plasma fractions, precipitated proteins, and particulate-laden industrial samples—based on density and particle size differentials. Designed for laboratories with moderate throughput demands, the DRK-TDL5E integrates robust refrigeration (–20 °C to +40 °C), a horizontally swinging bucket rotor configuration, and closed-loop speed regulation to maintain operational consistency across extended runs. Its mechanical architecture prioritizes thermal homogeneity in the chamber and minimal vibration transmission, supporting reproducible pelleting and supernatant clarity in compliance with standard operating procedures common in QC, clinical support, and materials processing labs.

Key Features

• Refrigerated operation with independent compressor-based cooling system ensuring stable temperature maintenance within ±1 °C across the full range (–20 °C to +40 °C)
• Microprocessor-controlled speed regulation with real-time feedback loop, achieving ±20 rpm accuracy at all setpoints up to 5000 rpm
• Horizontal rotor configuration supporting six 100 mL centrifuge bottles (e.g., polypropylene or glass), optimized for high-volume sample processing without imbalance-induced deceleration
• Brushless DC motor delivering high torque at low speeds, extended service life, and reduced electromagnetic interference
• Double-door interlock mechanism and automatic rotor recognition to prevent unauthorized or incompatible rotor usage
• Programmable run parameters including time (1 s–99 min 59 s), speed, temperature, and acceleration/deceleration ramps (0–9 levels)
• Acoustic noise level ≤65 dB(A) during operation, suitable for shared laboratory environments

Sample Compatibility & Compliance

The DRK-TDL5E accommodates standard 100 mL centrifuge tubes (diameter ≤45 mm), conical-bottom bottles, and sealed centrifuge containers compatible with biological, chemical, and food-grade matrices. It supports protocols aligned with ISO 15189 for medical laboratories and ASTM D4052 for density-based separations in petrochemical applications. While not certified for GLP/GMP production environments out-of-the-box, its firmware logs runtime parameters (speed, temperature, duration, rotor ID) in non-volatile memory—enabling traceability required for internal audit readiness. The unit conforms to IEC 61010-1:2010 for electrical safety and includes CE marking per EU Directive 2014/30/EU (EMC) and 2014/35/EU (LVD).

Software & Data Management

The centrifuge operates via an integrated LCD interface with tactile membrane keys and contextual on-screen prompts. All operational data—including start/stop timestamps, actual vs. setpoint values, error codes, and cumulative rotor hours—are stored locally for up to 1000 cycles. Optional RS-232 serial output enables connection to laboratory information management systems (LIMS) for automated log export. No proprietary cloud platform is required; raw data exports as CSV-compatible ASCII text for integration into validated analysis workflows. Audit trail functionality meets baseline requirements for FDA 21 CFR Part 11 compliance when paired with institutional electronic signature policies.

Applications

• Clinical and diagnostic labs: Serum/plasma separation from whole blood prior to immunoassay or electrophoresis
• Food and beverage quality control: Clarification of juice, dairy emulsions, and starch suspensions
• Paper and pulp testing: Fiber suspension concentration and fines removal per TAPPI T205
• Polymers and composites R&D: Precipitation of latex particles or filler dispersions prior to rheological characterization
• Environmental analysis: Sedimentation of suspended solids from wastewater effluents (ISO 11923)
• Academic teaching labs: Foundational centrifugation experiments emphasizing RCF calculation, rotor geometry effects, and thermal equilibration kinetics

FAQ

What is the minimum achievable temperature, and how quickly does the chamber reach it?
The chamber achieves –20 °C from ambient (25 °C) in approximately 18 minutes under no-load conditions. Cooling performance may vary slightly depending on ambient humidity and door-opening frequency.
Can the DRK-TDL5E accommodate fixed-angle rotors?
No—the DRK-TDL5E is configured exclusively for horizontal swing-out rotors. Fixed-angle rotor compatibility is not supported due to mechanical and thermal design constraints.
Is rotor balancing required before each run?
Yes. Symmetrical mass distribution across opposing positions is mandatory. The unit includes a built-in imbalance detection system that halts acceleration if differential load exceeds 5 g per position.
Does the centrifuge support timed pre-cooling?
Yes. Users may initiate “Chill Only” mode for up to 120 minutes prior to sample loading, ensuring thermal equilibrium before centrifugation begins.
What documentation is provided for regulatory validation?
A Factory Acceptance Test (FAT) report, electrical safety certificate, and user manual with calibration guidance are included. IQ/OQ templates are available upon request for integration into site-specific qualification protocols.