Thermo Scientific Sorvall ST4R Plus Benchtop Centrifuge
| Brand | Thermo Fisher |
|---|---|
| Origin | Shanghai, China |
| Model | Sorvall ST4R Plus Benchtop Centrifuge |
| Maximum Speed | 15,200 rpm (25,830 × g) |
| Rotor Compatibility | H-Flex HS4 rotor (supports 15 mL & 50 mL tubes, microtiter plates, and blood collection tubes), Fiberlite carbon fiber rotors, up to 24 rotor types |
| Safety Certification | CAMR-certified ClickSeal biocontainment lid |
| Rotor Locking | Auto-Lock™ quick-release system (≤3 s) |
| Control Interface | Full-color touchscreen with multi-step programmability |
| Refrigeration | Yes (ST4R Plus is refrigerated model) |
| Max Capacity | 4 × 400 mL or 4 × 1000 mL (depending on rotor configuration) |
| Compliance | Designed for GLP/GMP environments |
Overview
The Thermo Scientific Sorvall ST4R Plus Benchtop Centrifuge is an engineered solution for high-throughput, temperature-controlled separation in regulated and research-intensive laboratory environments. Utilizing fixed-angle and swinging-bucket rotor configurations, it operates on the principle of sedimentation under controlled centrifugal force—enabling precise particle separation based on density, size, and shape. With a maximum relative centrifugal force (RCF) of 25,830 × g and a top speed of 15,200 rpm, the ST4R Plus delivers performance comparable to floor-standing systems while maintaining a compact footprint suitable for biosafety cabinets and shared core facilities. Its refrigerated operation (typically −9 °C to +40 °C) ensures thermal stability during prolonged runs—critical for preserving labile biomolecules in cell culture, gene therapy workflows, and clinical diagnostics applications.
Key Features
- Auto-Lock™ Rotor Recognition & Installation: Patented mechanical interface enables secure, tool-free rotor attachment in under three seconds, minimizing downtime between protocols and reducing operator error.
- ClickSeal™ Biocontainment Lid: Independently certified by the UK’s Defence Science and Technology Laboratory (DSTL) at Porton Down under CAMR standards, this one-handed sealing mechanism prevents aerosol escape during high-speed runs involving infectious agents or hazardous samples.
- H-Flex HS4 Rotor System: A universal rotor designed for simultaneous processing of heterogeneous sample formats—including 15 mL and 50 mL conical tubes, standard EDTA/serum blood collection tubes, and 96-well microplates—eliminating the need for multiple dedicated rotors.
- Fiberlite™ Carbon Fiber Rotors: Engineered for fatigue resistance and dimensional stability at elevated speeds, these lightweight rotors reduce energy consumption and extend service life without compromising RCF delivery or balance tolerance.
- Full-Color Touchscreen Interface: Supports multi-step program creation, real-time parameter monitoring (speed, time, temperature, RCF), and customizable user profiles—facilitating SOP-driven operation across QA/QC and GMP-compliant labs.
Sample Compatibility & Compliance
The ST4R Plus accommodates a broad spectrum of primary and secondary containers—from single-use plastic centrifuge tubes to glass serum vials and sealed microtiter plates—across volumes ranging from 0.2 mL to 1000 mL per run. Its rotor library includes ISO-standardized adapters compliant with ASTM D4712 (centrifuge safety testing) and IEC 61010-2-020 (safety requirements for centrifuges). For regulated environments, the instrument supports configurable audit trails, electronic signatures, and role-based access control when integrated with Thermo Scientific Connect software—aligning with FDA 21 CFR Part 11, EU Annex 11, and ISO/IEC 17025 documentation requirements.
Software & Data Management
When paired with Thermo Scientific Connect platform, the ST4R Plus enables centralized fleet management, remote monitoring, and automated data export to LIMS or ELN systems. Method templates can be locked, version-controlled, and assigned to specific users or departments—ensuring procedural consistency across shifts and sites. All run logs include timestamped metadata (operator ID, rotor serial number, calibration status, ambient conditions), supporting traceability in GLP audits and CAP/CLIA inspections. Optional password-protected firmware updates maintain cybersecurity integrity per NIST SP 800-53 controls.
Applications
This centrifuge serves as a core platform in biopharmaceutical process development (e.g., harvest clarification of mammalian cell cultures), clinical virology (SARS-CoV-2 RNA extraction support), CAR-T manufacturing (PBMC isolation and washing), and academic structural biology (subcellular fractionation prior to cryo-EM sample prep). Its validated compatibility with ISO-certified rotors makes it suitable for USP sterility testing workflows and pharmacopeial methods requiring defined acceleration profiles and temperature ramping.
FAQ
Is the ST4R Plus compatible with existing Sorvall rotor libraries?
Yes—it accepts all Fiberlite carbon fiber rotors and legacy metal rotors certified for use with the Sorvall ST series, provided they are within their published service life and have valid calibration records.
Does the refrigeration system maintain setpoint accuracy during continuous operation?
Yes—the compressor-based cooling architecture sustains ±1 °C temperature stability over 60-minute runs at maximum speed, verified per ISO 13485 environmental validation protocols.
Can method parameters be exported for regulatory submission?
Yes—CSV and PDF reports containing full run metadata, including rotor ID, imbalance detection events, and thermal deviation logs, are exportable via USB or network interface.
What maintenance intervals are recommended for GMP environments?
Rotor inspection every 500 runs or annually (whichever occurs first); full system verification every 12 months using NIST-traceable tachometers and thermocouples.
Is remote diagnostics supported?
Yes—when connected to a secure enterprise network, Thermo Field Service Engineers may initiate encrypted remote sessions for firmware troubleshooting and calibration assistance, subject to site IT policy approval.
