AnTing DL-4000B Low-Speed Refrigerated Benchtop Centrifuge
| Brand | AnTing |
|---|---|
| Origin | Shanghai, China |
| Model | DL-4000B |
| Type | Benchtop Refrigerated Centrifuge |
| Rotor Configuration | Swing-Bucket (Horizontal) |
| Max Speed | 4000 rpm |
| Max RCF | 3600 × g |
| Max Capacity | 500 mL × 6 |
| Temperature Range | −20 °C to +30 °C |
| Timer Range | 0–99 min |
| Power Supply | 220 V, 50 Hz, 2.5 kW |
| Dimensions (L×W×H) | 710 × 575 × 850 mm |
| Weight | 213 kg |
| Rotor Options | No.1 (500 mL × 6 / 50 mL × 24 / 10 mL × 72), No.2 (6 mL × 210), No.3 (192-well microplate, max 3500 rpm) |
Overview
The AnTing DL-4000B is a robust, refrigerated benchtop centrifuge engineered for routine low-speed separation tasks in clinical laboratories, quality control environments, and academic research settings. It operates on the principle of sedimentation under controlled gravitational force (RCF), enabling reliable phase separation of suspensions, cell pellets, serum/plasma preparations, and particulate-rich biological or industrial samples. Unlike high-speed or ultracentrifuges, the DL-4000B is optimized for applications requiring gentle yet effective pelleting—such as whole blood fractionation, yeast or bacterial harvesting, polymer precipitation, and large-volume sample processing—without inducing excessive shear stress or thermal denaturation. Its integrated refrigeration system maintains precise temperature control between −20 °C and +30 °C during operation, ensuring sample integrity for thermolabile analytes including enzymes, antibodies, and nucleic acid complexes.
Key Features
- Refrigerated operation with independent compressor-based cooling system, delivering stable temperature regulation across the full speed range
- Swing-bucket rotor architecture supporting multiple interchangeable configurations: No.1 rotor (500 mL × 6, 50 mL × 24, or 10 mL × 72), No.2 rotor (6 mL × 210 tubes), and No.3 microplate rotor (192-well format, rated up to 3500 rpm)
- Electronic door lock with automatic rotor recognition and safety interlock to prevent operation with improperly seated rotors or open lid
- Microprocessor-controlled timing (0–99 minutes) with auto-brake and soft-start functionality to minimize mechanical wear and sample disturbance
- High-strength reinforced polymer housing offering structural rigidity while reducing overall mass and vibration transmission
- Low-noise brushless DC motor delivering consistent torque output and extended service life under continuous use conditions
Sample Compatibility & Compliance
The DL-4000B accommodates a broad spectrum of sample containers—from standard conical centrifuge tubes (10–500 mL) to deep-well plates and specialized culture vessels—making it suitable for hematology, bioprocessing, food testing, and environmental sample preparation workflows. All rotors are dynamically balanced and certified for use at maximum rated speeds per ISO 15197 and IEC 61010-2-020 safety standards. The unit complies with CE marking requirements for laboratory equipment and meets electromagnetic compatibility (EMC) Class B specifications. While not explicitly validated for GMP or FDA 21 CFR Part 11 environments, its programmable timer, non-volatile parameter storage, and repeatable RCF profiles support GLP-aligned documentation practices when integrated into controlled laboratory procedures.
Software & Data Management
The DL-4000B features an embedded digital control interface with LED display, permitting direct input of speed (rpm), relative centrifugal force (×g), time, and setpoint temperature. Parameter recall memory retains up to 10 user-defined protocols. Though it does not include PC connectivity or proprietary software, all operational parameters—including actual run time, final speed, and chamber temperature—are logged locally and displayed post-run for manual recordkeeping. This design prioritizes reliability and ease-of-use over networked data export, aligning with regulatory expectations for instruments deployed in ISO/IEC 17025-accredited testing labs where traceability is maintained via handwritten or LIMS-integrated log entries.
Applications
- Clinical diagnostics: Serum and plasma separation from whole blood specimens prior to immunoassay or biochemical analysis
- Microbiology: Harvesting bacterial or fungal biomass from liquid cultures without compromising viability
- Pharmaceutical QA/QC: Clarification of suspension formulations, excipient compatibility testing, and stability study sample preparation
- Food & beverage: Fat separation in dairy emulsions, starch recovery from plant extracts, and yeast removal in fermentation broths
- Environmental testing: Sedimentation of suspended solids in wastewater or soil leachate samples for gravimetric or elemental analysis
FAQ
What is the maximum allowable imbalance tolerance for the DL-4000B?
The centrifuge requires symmetrical loading across all positions of a given rotor; maximum permissible imbalance is ±0.5 g per tube pair for horizontal rotors.
Can the DL-4000B be operated without refrigeration?
Yes—the temperature control system can be disabled, allowing ambient-temperature operation within the mechanical limits of the rotor and sample stability requirements.
Is rotor No.3 compatible with PCR plates?
No. Rotor No.3 is designed exclusively for standard 192-well microtiter plates (e.g., ELISA or cell culture formats); it does not accommodate skirted or low-profile PCR plates.
Does the unit include a calibration certificate?
Factory calibration of speed and temperature sensors is performed prior to shipment; however, formal metrological certification must be obtained through third-party accredited service providers per ISO/IEC 17025 guidelines.
What maintenance intervals are recommended?
Routine inspection of door seal integrity, rotor corrosion status, and refrigerant pressure should occur every 6 months; full preventive maintenance—including bearing assessment and compressor performance verification—is advised annually.
