LD-3 Benchtop High-Capacity Centrifuge
| Origin | Jiangsu, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Model | LD-3 |
| Price | USD 425 (FOB Jiangsu) |
| Capacity | 6 × 50 mL conical tubes |
| Max Speed | 4,000 rpm |
| Speed Control | Continuously Variable (0–4,000 rpm) |
| Power Supply | 220 V / 50 Hz |
| Dimensions (W×D×H) | 360 × 320 × 300 mm |
| Net Weight | 28 kg |
Overview
The LD-3 Benchtop High-Capacity Centrifuge is an engineered solution for routine sedimentation and phase separation tasks in clinical diagnostics, environmental testing, food quality control, and academic research laboratories. Designed around horizontal rotor architecture with fixed-angle configuration, it operates on the principle of centrifugal force generation—accelerating sample-containing tubes radially outward to separate components based on density differentials. With a maximum relative centrifugal force (RCF) of approximately 1,700 × g at 4,000 rpm, the LD-3 delivers reproducible pelleting of cells, precipitates, and particulates without requiring refrigeration or vacuum systems. Its compact footprint and robust cast-aluminum housing support stable operation under continuous duty cycles, making it suitable for high-throughput workflows where sample volume efficiency and mechanical reliability are prioritized over ultra-high-speed performance.
Key Features
- Fixed-angle horizontal rotor accommodating six 50 mL conical centrifuge tubes (e.g., Falcon® 15 mL and 50 mL formats), enabling batch processing of up to 300 mL per run
- Continuously variable speed control (0–4,000 rpm) via intuitive analog dial interface with real-time LED RPM display
- Brushless DC motor delivering low-vibration operation, extended service life, and minimal heat generation during prolonged runs
- Automatic rotor recognition logic prevents unsafe operation outside validated speed limits for installed rotor geometry
- Mechanical safety interlock system halts rotation immediately upon lid opening; dual-locking lid mechanism meets IEC 61010-2-020 requirements for laboratory centrifuges
- Thermal management optimized for ambient operation (10–30 °C); no active cooling required, reducing energy consumption and maintenance complexity
Sample Compatibility & Compliance
The LD-3 supports standard polypropylene and polycarbonate centrifuge tubes compliant with ISO 13485–certified manufacturing practices. It is validated for use with common biological matrices including whole blood, serum, urine, soil suspensions, and emulsified food extracts. While not designed for biosafety level 3 (BSL-3) containment or ultracentrifugation applications, the unit conforms to essential safety and electromagnetic compatibility directives applicable to Class II laboratory equipment: EN 61326-1 (EMC), EN 61010-1 (safety), and RoHS 2011/65/EU. Documentation includes CE Declaration of Conformity, Factory Calibration Certificate (traceable to NIM, China), and basic operating manual in English and Chinese.
Software & Data Management
The LD-3 operates as a standalone instrument without embedded microprocessor-based programmability or digital connectivity. All operational parameters—including speed setpoint, run time (mechanically timed up to 30 minutes), and acceleration/deceleration profiles—are manually configured and monitored via front-panel controls. For laboratories implementing GLP or GMP frameworks, users may integrate external logging via analog output (0–5 V signal proportional to RPM) or employ third-party data acquisition systems. While the device does not support FDA 21 CFR Part 11-compliant electronic records, its mechanical simplicity ensures full auditability of run conditions through operator logs and physical timer stamps.
Applications
- Routine hematocrit preparation and serum/plasma isolation from whole blood specimens in clinical labs
- Sedimentation of suspended solids in wastewater effluent or drinking water samples prior to turbidity or metal analysis
- Clarification of fermentation broths, plant extracts, and dairy homogenates in QC/QA environments
- Pre-concentration of microorganisms (e.g., E. coli, yeast) for downstream DNA extraction or viability assays
- Separation of lipid layers from aqueous phases in solvent-based extractions (e.g., Folch method)
- Batch pellet recovery in teaching labs where cost-effective, low-maintenance instrumentation is prioritized over advanced automation
FAQ
What is the maximum RCF achievable with the LD-3 centrifuge?
The LD-3 achieves a maximum RCF of ~1,700 × g when operated at 4,000 rpm with 50 mL tubes positioned at the rotor’s outer radius.
Can this centrifuge accommodate swing-bucket rotors?
No—the LD-3 is equipped exclusively with a fixed-angle rotor optimized for rapid pelleting; swing-bucket configurations are not supported.
Is the unit supplied with rotor and tube adapters?
Yes, the standard configuration includes one aluminum fixed-angle rotor (6-place, 50 mL capacity) and six reusable rubber tube holders compatible with standard conical centrifuge tubes.
Does the LD-3 meet international shipping and customs documentation requirements?
Yes—each unit ships with commercial invoice, packing list, CE DoC, and manufacturer’s warranty card, all formatted for seamless import into EU, North America, and ASEAN markets.
What maintenance intervals are recommended for long-term reliability?
Routine cleaning of the rotor chamber and visual inspection of the drive shaft every 200 operating hours; annual calibration verification of speed accuracy using a certified tachometer is advised.
