TDL-50 Benchtop Centrifuge
| Origin | Zhejiang, China |
|---|---|
| Manufacturer Type | Authorized Distributor |
| Origin Category | Domestic (PRC) |
| Model | TDL-50 |
| Price Range | USD 1–699 |
| Centrifugation Class | General-Purpose Laboratory Centrifuge |
| Max Capacity | 6 × 50 mL |
| Max Speed | 4000 rpm (infinitely variable) |
| RCF | 2325 × g |
| Timer Range | 0–60 min |
| Noise Level | ≤60 dB(A) |
| Power Supply | AC 220 V, 50 Hz, 2 A |
| Rotor Material | Anodized Aluminum Alloy |
| Rotor Type | Fixed-angle, stainless steel protective sleeves included |
| Compliance | CE-marked per IEC 61010-1, EN 61326-1 |
Overview
The TDL-50 benchtop centrifuge is a general-purpose, fixed-angle laboratory centrifuge engineered for reliable sedimentation-based separation of biological and chemical suspensions. It operates on the principle of radial acceleration—generating centrifugal force proportional to rotational speed squared and rotor radius—to accelerate phase separation in heterogeneous mixtures. Designed for routine clinical and research applications, the unit delivers consistent RCF (relative centrifugal force) up to 2325 × g at 4000 rpm, enabling efficient pelleting of cells, precipitates, and particulates from serum, plasma, whole blood, and reagent solutions. Its compact footprint and low thermal profile support continuous operation in shared lab environments without dedicated cooling infrastructure.
Key Features
- Infinitely variable speed control (0–4000 rpm) with digital feedback loop ensures precise, repeatable setpoint attainment and minimizes overshoot during acceleration/deceleration.
- Integrated automatic rotor balancing mechanism compensates for minor mass asymmetry across tube positions, reducing vibration and extending bearing service life.
- Anodized aluminum alloy rotor assembly offers high strength-to-weight ratio and corrosion resistance while maintaining dimensional stability under repeated thermal cycling.
- Stainless steel protective sleeves accommodate standard 50 mL conical centrifuge tubes (e.g., Falcon-style), preventing tube rupture and minimizing aerosol generation during high-speed runs.
- Brushless DC motor provides quiet operation (≤60 dB[A] at 1 m), low electromagnetic interference, and maintenance-free longevity exceeding 10,000 hours MTBF.
- Digital timer (0–60 minutes) with auto-stop function supports unattended batch processing; audible alert signals completion without requiring visual monitoring.
Sample Compatibility & Compliance
The TDL-50 accepts common polypropylene or polycarbonate 50 mL centrifuge tubes rated for ≥2500 × g. It is routinely deployed in CLIA-waived and ISO 15189-aligned clinical labs for serum separation prior to immunoassay, electrophoresis, or ELISA workflows. The instrument complies with IEC 61010-1 (safety requirements for electrical equipment for measurement, control, and laboratory use) and EN 61326-1 (EMC requirements for laboratory instrumentation). While not refrigerated, its thermally optimized housing maintains ambient rotor temperature rise below 8 °C after 30 min at maximum speed—suitable for heat-sensitive analytes requiring non-cryogenic processing.
Software & Data Management
The TDL-50 is a standalone electromechanical device with no embedded firmware or network interface. All operational parameters (speed, time, run status) are displayed via LED indicators; no data logging, audit trail, or electronic record functionality is provided. As such, it meets basic GLP documentation requirements when used with manual logbook entries and operator sign-off. For laboratories subject to FDA 21 CFR Part 11 compliance, external validation protocols must be applied to define acceptable use boundaries (e.g., speed calibration traceability to NIST standards, timer verification per ASTM E2500).
Applications
- Serum and plasma separation from whole blood specimens in hospital core labs and point-of-care settings.
- Precipitation of antibodies, antigens, or immune complexes in diagnostic immunology workflows.
- Clarification of bacterial or yeast cultures prior to protein extraction or nucleic acid isolation.
- Removal of insoluble particulates from buffer stock solutions and reagent formulations.
- Preparative sedimentation of latex beads, microspheres, or colloidal suspensions in materials science prototyping.
FAQ
Is the TDL-50 suitable for centrifuging infectious or biohazardous samples?
Yes—when used with sealed, certified biosafety centrifuge tubes and appropriate PPE; however, it lacks a sealed rotor chamber or aerosol-tight lid interlock, so BSL-2+ applications require secondary containment (e.g., sealed buckets) and risk assessment per institutional biosafety committee guidelines.
Does the unit include rotor calibration documentation?
No factory-provided calibration certificate is included; users must perform initial speed verification using an independent tachometer traceable to national metrology standards, as recommended in ISO/IEC 17025 Clause 6.5.
Can the TDL-50 accommodate swing-bucket rotors?
No—the rotor is fixed-angle only and mechanically incompatible with swing-out configurations; alternative models with interchangeable rotor systems are available upon request.
What maintenance is required for long-term reliability?
Biannual inspection of rotor threads, sleeve integrity, and motor ventilation grilles is advised; lubrication is not required due to brushless motor design and sealed bearing construction.
