Thermo Scientific Wellwash Versa Plate Washer

Overview

The Thermo Scientific Wellwash Versa Plate Washer is a high-performance, programmable microplate washer engineered for precision, reproducibility, and operational flexibility in life science laboratories. It operates on the principle of controlled vacuum aspiration and positive-pressure fluid dispensing to achieve consistent, low-residue washing across 96-well and 384-well microplates—critical for ELISA, cell-based assays, immunoassays, and other plate-based analytical workflows. Unlike legacy washers with fixed protocols, the Wellwash Versa integrates modular hardware architecture with an intuitive, context-sensitive software interface to support method development, validation, and routine execution under GLP- and GMP-aligned laboratory practices. Its non-pressurized fluid handling system eliminates risk of backflow into pumps, ensuring long-term reliability and reducing maintenance frequency—a key requirement for labs performing high-throughput screening or regulated bioanalytical testing.

Key Features

• Modular wash head configuration supporting 1×8, 1×12, 2×8, 2×12, and 1×16 formats—including dedicated 1×8 and 2×8 cell wash heads optimized for gentle aspiration without monolayer disruption.
• Adjustable protocol parameters: independent control over dispense volume, aspiration height, aspiration speed, soak time, and number of wash cycles—enabling optimization for diverse assay chemistries and cell types.
• Large color touchscreen display with eight-language UI (English, Chinese, French, German, Spanish, Portuguese, Russian, Japanese) and embedded contextual help—minimizing operator training time and reducing procedural errors.
• Color-coded fluidic connectors and plug-and-play sensor cables accelerate installation and reconfiguration; removable pre-wash reservoir and built-in self-cleaning maintenance routines simplify daily upkeep.
• Non-pressurized bottle design with integrated liquid-level sensors for wash, rinse, and waste reservoirs—preventing overflow, siphoning, and pump contamination while supporting compliance with ISO 13485 and FDA 21 CFR Part 11 data integrity expectations when paired with audit-trail-enabled software extensions.
• Linear orbital shaking during wash cycles enhances removal of loosely bound reagents and particulates, improving signal-to-noise ratios in downstream detection steps.

Sample Compatibility & Compliance

The Wellwash Versa accommodates standard ANSI/SLAS-compliant 96-well and 384-well plates—including flat-bottom, U-bottom, V-bottom, and cell-culture-optimized formats. Its cell-specific wash heads are validated for use with adherent mammalian cell lines (e.g., HEK293, HeLa, CHO-K1) and primary cultures where preservation of monolayer integrity is essential. The instrument meets IEC 61010-1 safety standards for laboratory equipment and supports traceability requirements through timestamped log export via USB. When deployed in regulated environments, it can be configured to generate electronic records compliant with ALCOA+ principles (Attributable, Legible, Contemporaneous, Original, Accurate) when integrated with Thermo Fisher’s optional Plate Washer Manager software, which provides full audit trail, user access controls, and electronic signature capability per 21 CFR Part 11.

Software & Data Management

Internal firmware enables creation, storage, and recall of up to 100 user-defined wash protocols. Protocols are transferable between instruments—or between instrument and PC—using standard USB flash drives, facilitating method harmonization across multi-site laboratories. Log files containing run timestamps, operator ID (if enabled), plate barcode (when scanned), cycle counts, and error codes are exportable in CSV format for QC review or LIMS ingestion. Optional Plate Washer Manager software extends functionality with remote monitoring, scheduled maintenance alerts, version-controlled protocol libraries, and automated report generation aligned with ISO/IEC 17025 documentation requirements. RS-232C serial interface supports bidirectional communication with robotic stackers (e.g., RapidStak), enabling unattended walk-away operation in automated assay platforms.

Applications

• ELISA and multiplex immunoassay plate washing with minimal residual carryover to reduce background interference.
• Cell-based assays requiring gentle buffer exchange—such as calcium flux, cAMP, or reporter gene assays—without compromising confluence or viability.
• Preparation of plates for high-sensitivity detection methods including chemiluminescence, fluorescence polarization, and time-resolved fluorescence (TRF).
• QC/QA workflows in biopharmaceutical manufacturing, where wash consistency directly impacts assay precision and lot-release decision-making.
• Academic and core facility environments supporting shared instrumentation with multi-user access, language localization, and rapid method deployment.

FAQ

Does the Wellwash Versa support 384-well plates with the same residual volume performance as 96-well plates?
Yes—the instrument achieves <1.5 µL residual volume per well in both 96-well and 384-well configurations, verified using gravimetric and dye-elution validation protocols per ASTM E2554-17 guidelines.
Can wash protocols be exported and imported across different Wellwash Versa units?
Yes—protocols, logs, and configuration settings are fully portable via USB drive in standardized binary format, enabling seamless replication across instruments in distributed lab networks.
Is the cell wash head compatible with coated or extracellular matrix–treated plates?
Yes—adjustable aspiration height and reduced vacuum pressure settings allow customization for delicate surfaces, including collagen-, fibronectin-, or poly-D-lysine-coated plates.
What regulatory documentation is available for IQ/OQ/PQ validation?
Thermo Fisher provides a comprehensive Validation Support Package including URS templates, FAT/SAT checklists, test scripts, and calibration certificates traceable to NIST standards.
How does the auto-rinse function contribute to instrument longevity?
The scheduled post-run rinse circulates deionized water through all fluid paths to prevent salt crystallization and protein buildup—reducing downtime and extending pump and valve service intervals by up to 40% compared to manual cleaning regimens.