Thermo Scientific Sorvall Stratos Continuous-Flow Centrifuge
| Brand | Thermo Fisher |
|---|---|
| Origin | USA |
| Manufacturer Type | Authorized Distributor |
| Origin Category | Imported |
| Model | Sorvall Stratos |
| Pricing | Available Upon Request |
Overview
The Thermo Scientific Sorvall Stratos Continuous-Flow Centrifuge is an engineered solution for high-throughput, gentle, and scalable separation of biological suspensions under continuous operation. Based on the hydrodynamic principle of continuous-flow sedimentation—where sample enters the rotor tangentially and experiences sustained centrifugal force along a defined flow path—the system enables efficient pelleting of cells, subcellular particles, and macromolecular complexes without batch-to-batch interruption. Designed for process development and pilot-scale bioprocessing, the Sorvall Stratos operates at up to 17,000 rpm (25,040 × g) with a maximum throughput of 54 L/h, supporting reproducible harvest of mammalian, insect, yeast, bacterial, and viral particles while preserving structural integrity and viability. Its refrigerated, hermetically sealed chamber maintains temperature control from –9 °C to +40 °C (CFC-free), ensuring thermal stability during extended runs.
Key Features
- Continuous-flow titanium rotor optimized for high-speed sedimentation with minimal shear stress—ideal for sensitive eukaryotic and prokaryotic cell harvesting.
- EASYcontrol II microprocessor-based interface with intuitive touchscreen navigation, 9 user-defined protocols plus 1 pre-cool program, and automatic rotor recognition.
- Integrated electronic imbalance detection and dual mechanical door interlocks compliant with IEC 61010-2-020 safety standards.
- Brushless induction drive system ensures long service life, low maintenance, and stable rotational performance across full speed range (300–17,000 rpm).
- Reinforced stainless-steel chamber and electrogalvanized steel base provide structural rigidity and vibration damping—critical for uninterrupted continuous operation.
- Optional peristaltic pump integration with synchronized speed control via centrifuge interface; recommended flow rate: 100–900 mL/min for optimal particle recovery and resolution.
- Polypropylene flow-through inserts enhance sedimentation efficiency for low-density or submicron particles—reducing effective settling volume from 300 mL to 50 mL in low-solids applications.
Sample Compatibility & Compliance
The Sorvall Stratos accommodates a broad spectrum of biological and industrial suspensions, including cultured mammalian and insect cells, bacterial lysates, viral particles, protein aggregates, immunoglobulins, phage preparations, yeast, phytoplankton, and colloidal metal/plastic nanoparticles. Its design conforms to ISO 13485 quality management principles for medical device manufacturing environments and supports GLP/GMP-aligned workflows through audit-trail-capable protocol logging (when paired with Thermo Fisher’s optional data acquisition software). All rotors and inserts are autoclavable (121 °C, 20 min), enabling strict sterility assurance for vaccine production and cell therapy applications. The system meets UL/CSA 61010-1 and EN 61326-1 electromagnetic compatibility requirements.
Software & Data Management
While the EASYcontrol II controller operates independently, it supports RS-232 and USB connectivity for external data capture and remote monitoring. When integrated with Thermo Fisher’s optional Centri-Vue™ Software Suite (v3.2+), users gain FDA 21 CFR Part 11-compliant electronic records—including time-stamped run logs, parameter change history, operator ID tagging, and digital signature capability. Real-time monitoring of RCF, temperature, flow rate (via pump interface), and elapsed runtime enables traceability across validation batches. Export formats include CSV and PDF for inclusion in regulatory submissions (e.g., IND, BLA, or CE Technical Files).
Applications
- Harvesting suspension-grown CHO, HEK293, Sf9, and hybridoma cells for monoclonal antibody and recombinant protein production.
- Clarification of bacterial fermentation broths and isolation of inclusion bodies or enveloped viruses.
- Concentration and purification of bacteriophages for therapeutic or diagnostic use.
- Isolation of exosomes, ribonucleoprotein complexes, and large protein assemblies under native conditions.
- Environmental sample processing: concentration of plankton, microplastics, or heavy metal colloids from aqueous matrices.
- Downstream enrichment steps in vaccine manufacturing—particularly for whole-virion or VLP-based candidates.
FAQ
What is the maximum continuous operating time?
The Sorvall Stratos supports unattended runs up to 9 hours and 59 minutes; however, for extended (>12 h) applications, periodic cooling maintenance and rotor inspection are recommended per Thermo Fisher’s Operation Manual Section 4.3.
Can the system be validated for GMP manufacturing?
Yes—when configured with validated rotors, calibrated temperature sensors, and Centri-Vue™ Software, the system supports IQ/OQ/PQ documentation packages aligned with Annex 15 and WHO TRS 986 guidelines.
Is the titanium rotor compatible with sodium hypochlorite or other harsh disinfectants?
Titanium Grade 5 (Ti-6Al-4V) exhibits excellent resistance to chlorine-based agents; however, prolonged exposure >1% concentration is not recommended—refer to Thermo Fisher’s Material Compatibility Bulletin CF-2022-Ti.
Does the centrifuge support third-party peristaltic pumps?
Yes—any pump with analog 0–10 V or digital Modbus RTU output can be interfaced; Thermo Fisher provides pinout schematics and control logic tables upon request.
How is temperature uniformity verified across the rotor chamber?
Thermo Fisher performs chamber mapping per ASTM E2251-20 using NIST-traceable PT100 probes at nine spatial points during factory qualification; calibration certificates are supplied with each unit.
