Thermo Scientific™ Sorvall™ WX+ Ultracentrifuge

Overview

The Thermo Scientific™ Sorvall™ WX+ Ultracentrifuge is an engineered solution for high-resolution separation of biological macromolecules—including nucleic acids, viruses, subcellular organelles, and protein complexes—under controlled thermal and mechanical conditions. Based on the principle of sedimentation velocity and equilibrium ultracentrifugation, the WX+ platform delivers reproducible RCF up to 802,000 × g using certified titanium or carbon-fiber rotors (e.g., T-890), enabling precise density-gradient and pelleting applications. Its compact benchtop footprint (88 × 79 × 69 cm) and low operating height (86.3 cm) reduce ergonomic strain during rotor loading/unloading while maintaining full compliance with ISO 13485–aligned manufacturing standards. Designed for laboratories where space, safety, and regulatory traceability are critical, the WX+ integrates solid-state thermoelectric refrigeration—eliminating ozone-depleting refrigerants—and meets stringent electrical safety requirements per IEC 61010-1 and EMC directives (EN 61326-1).

Key Features

• Ultra-high performance: 100,000 rpm maximum speed with ±2 rpm speed control accuracy ensures consistent sedimentation coefficients across repeated runs.
• Fiberlite™ carbon-fiber rotor technology: Fatigue-resistant construction enables full-rated speed operation throughout the 15-year warranty period—no derating required.
• Intuitive 7-inch full-color LCD touchscreen: Front-mounted interface supports multi-step protocol programming, real-time parameter adjustment, and graphical status visualization.
• Auto-balance compensation: Accepts visual sample imbalance up to ±5 mm, reducing pre-run balancing time without compromising rotor integrity or run stability.
• Modular rotor compatibility: Accepts a broad range of Thermo Scientific and third-party ultracentrifuge rotors—including swinging-bucket, fixed-angle, and vertical rotors—optimizing legacy inventory utilization.
• Integrated LED status bar: 47-cm programmable multicolor light strip provides at-a-glance operational feedback (e.g., standby, run, cool-down, fault) visible from 3 meters.
• No-anchor mobility design: Casters and low center-of-gravity enable safe relocation within lab environments without structural anchoring.

Sample Compatibility & Compliance

The Sorvall WX+ accommodates standard ultracentrifuge vessels—from 1.5 mL microtubes to 250 mL bottles—across horizontal, fixed-angle, and near-vertical configurations. It supports common gradient media (e.g., sucrose, glycerol, iodixanol) and maintains temperature uniformity (±0.5 °C) within the chamber during extended runs (up to 99 hours). The system complies with CE marking requirements under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD), as well as cCSAus certification for North American use. All firmware and control logic adhere to GLP-relevant design principles, including audit-trail-capable event logging (start/stop times, temperature setpoints, rotor ID, error codes) exportable via USB for FDA 21 CFR Part 11–aligned documentation workflows.

Software & Data Management

The onboard operating system stores up to 1,000 user-defined methods with nested steps (e.g., ramp-to-speed → hold → decelerate → brake), each timestamped and associated with rotor serial number, run duration, and cumulative rotor hours. Protocol exports include CSV-formatted metadata for integration into LIMS or ELN platforms. Firmware updates are delivered via encrypted USB drive with SHA-256 signature verification. No cloud connectivity is implemented—data residency remains fully local to satisfy institutional IT security policies and GDPR/CCPA-aligned data sovereignty requirements.

Applications

The WX+ serves core workflows in structural biology, virology, extracellular vesicle research, and biopharmaceutical process development. Typical use cases include: isolation of exosomes and microvesicles from cell culture supernatants; purification of recombinant AAV vectors; preparative separation of ribosomal subunits; analytical sedimentation velocity analysis of protein oligomerization states; and high-yield pelleting of bacterial inclusion bodies. Its compatibility with iodixanol gradients supports iso-osmotic virus purification under GMP-adjacent conditions when paired with validated cleaning procedures and routine calibration per ASTM F2119.

FAQ

What rotor types are supported by the Sorvall WX+?
The instrument accepts all Thermo Scientific Fiberlite and titanium rotors rated for ≤100,000 rpm, including T-890, AH-629, and TX-800 series, as well as selected third-party rotors meeting ISO 21501-4 dimensional and balance specifications.
Is remote monitoring or network connectivity available?
No Ethernet, Wi-Fi, or Bluetooth interfaces are included. All operation and data export occur locally via front-panel touchscreen or USB port to maintain air-gapped security.
How is temperature stability maintained during prolonged runs?
Solid-state thermoelectric modules actively regulate chamber temperature between 0–40 °C with closed-loop feedback; heat dissipation is managed through passive convection and low-noise axial fans (≤51 dBA at 1 m).
Does the system support 21 CFR Part 11 compliance?
While the WX+ does not include electronic signatures or role-based access control, its audit-trail logs (user ID, timestamp, parameter changes) meet foundational ALCOA+ criteria for raw data integrity when used within a validated laboratory quality management system.
What maintenance intervals are recommended?
Rotor inspection every 500 hours (or annually), vacuum pump oil change every 2,000 hours, and full preventive maintenance every 12 months—per Thermo Fisher Service Bulletin WX+-PM-2023.