Hershey TDZ5-WS Benchtop Low-Speed Centrifuge
| Brand | Hershey |
|---|---|
| Origin | Hunan, China |
| Model | TDZ5-WS |
| Instrument Type | Benchtop Centrifuge |
| Maximum Capacity | 4 × 100 mL |
| Maximum Speed | 5000 rpm |
| Maximum RCF | 4800 × g |
| Speed Accuracy | ±50 rpm |
| Timer Range | 0–99 h 59 min |
| Number of Presets | 20 |
| Drive System | AC Brushless Inverter Motor |
| Control System | Microprocessor-Based with TFT Touchscreen Display |
| Chamber Material | Stainless Steel (304) |
| Dimensions (L×W×H) | 500 × 450 × 280 mm |
| Weight | 25 kg |
| Noise Level | ≤65 dB(A) |
| Power Supply | AC 220 V, 50 Hz |
| Total Power | 350 W |
| Acceleration/Deceleration Profiles | 10-step selectable |
| Rotor Types | Fixed-angle and Swing-out Configurations |
| Rotor Compatibility | 12 × 15 mL, 18 × 10 mL, 24 × 10 mL, 4 × 50 mL, 4 × 100 mL, 16 × 15 mL, 24 × 5 mL (vacutainer) |
Overview
The Hershey TDZ5-WS Benchtop Low-Speed Centrifuge is an engineered solution for routine separation tasks in academic laboratories, clinical diagnostics, quality control units, and industrial R&D environments. Designed around the principles of sedimentation centrifugation—where differential particle migration under controlled gravitational forces enables phase separation—the TDZ5-WS operates within a safe, low-speed regime (up to 5000 rpm / 4800 × g), making it ideal for isolating cells, organelles, precipitates, serum, plasma, and particulate suspensions without inducing shear-induced damage or thermal denaturation. Its compact footprint and robust mechanical architecture ensure stable operation across extended run cycles, while compliance with IEC 61010-1 safety standards for laboratory electrical equipment supports integration into regulated workflows.
Key Features
- Brushless inverter motor drive system delivering maintenance-free operation, reduced electromagnetic interference, and consistent torque delivery across speed ranges.
- TFT true-color touchscreen interface with real-time dual-parameter display (set vs. actual speed, time, RCF, and acceleration/deceleration status), supporting intuitive navigation and parameter recall.
- Stainless steel (AISI 304) centrifuge chamber and rotor housing offering corrosion resistance, ease of decontamination, and long-term structural integrity under repeated sterilization protocols.
- 10-step programmable acceleration and deceleration profiles, minimizing sample disturbance during spin-up and brake phases—particularly critical for fragile biological pellets or density-gradient preparations.
- Integrated automatic rotor recognition logic (via mechanical coding) ensures correct RCF calculation and prevents overspeed conditions when switching between fixed-angle and swing-out rotors.
- Dual-stage vibration damping system with self-balancing capability compensates for minor tube weight discrepancies, maintaining operational stability even at maximum load.
- Electromechanical door lock with position-sensing feedback meets EN 61000-6-3 EMC requirements and prevents accidental lid opening during rotation.
Sample Compatibility & Compliance
The TDZ5-WS accommodates a broad range of primary and secondary sample containers—including polypropylene conical tubes (15 mL, 50 mL), vacuum blood collection tubes (5 mL), microcentrifuge tubes (1.5–2.0 mL), and custom adapters for specialized vessels. It supports standard ISO 13485-aligned workflows in clinical labs and complies with GLP-relevant documentation practices through non-volatile program memory (20 user-defined protocols retained after power loss). While not certified for FDA 21 CFR Part 11 compliance out-of-the-box, its audit-ready parameter logging (via optional RS232/USB data export) facilitates traceability in GMP-adjacent environments such as raw material testing and stability studies.
Software & Data Management
The embedded microcontroller records runtime metadata—including start/stop timestamps, final speed, elapsed time, and fault codes—for each run cycle. Data export is supported via USB flash drive or serial interface (RS232), enabling integration with LIMS platforms or local lab databases. No proprietary software installation is required; exported logs are formatted as plain-text CSV files compatible with Excel, LabArchives, or ELN systems. Firmware updates are performed via USB stick using signed binary packages, ensuring version control and cryptographic integrity.
Applications
- Clinical hematology: Serum/plasma separation from whole blood using vacutainer-compatible rotors (24 × 5 mL, 4000 rpm, 2950 × g).
- Pharmaceutical QC: Clarification of suspension formulations prior to HPLC analysis or filter validation studies.
- Agricultural research: Extraction and pelleting of plant cell debris or soil microbial fractions.
- Food safety labs: Fat separation in dairy emulsions or pathogen concentration from liquid food matrices.
- Biochemistry teaching labs: Demonstration of differential centrifugation principles using yeast lysates or erythrocyte suspensions.
- Blood bank operations: Platelet-rich plasma (PRP) preparation under standardized low-g protocols.
FAQ
What is the maximum relative centrifugal force (RCF) achievable with the TDZ5-WS?
The unit delivers up to 4800 × g at 5000 rpm with the 4 × 100 mL swing-out rotor.
Does the TDZ5-WS support continuous operation mode?
No—it operates in timed batch mode only, with a maximum timer setting of 99 hours and 59 minutes.
Can the centrifuge be used for biosafety level 2 (BSL-2) applications?
Yes, when equipped with sealed buckets and operated inside a certified biosafety cabinet; the stainless steel chamber allows validated surface decontamination with 70% ethanol or 0.5% sodium hypochlorite.
Is rotor calibration required before first use?
No—factory-calibrated rotor identification and RCF algorithms eliminate need for field calibration; however, periodic verification using a tachometer and reference standards is recommended per ISO/IEC 17025 guidelines.
What safety certifications does the TDZ5-WS hold?
It conforms to IEC 61010-1 (Ed. 3.1) for electrical safety and IEC 61326-1 for electromagnetic compatibility; CE marking applies for EU market placement.
