Thermo Scientific Light-Sensing Microplate Shaker

Overview

The Thermo Scientific Light-Sensing Microplate Shaker is an engineered orbital shaker designed specifically for temperature-controlled, low-profile integration into cold rooms, refrigerated incubators, and standard microbiological growth chambers operating below 60 °C. Unlike conventional benchtop shakers, this unit features a proprietary optical sensing mechanism that detects the presence of a microplate placed on its platform—automatically initiating oscillation only when a plate is correctly positioned. This light-sensing activation eliminates unintended operation, reduces energy consumption, and enhances protocol reproducibility in high-throughput life science workflows. Its core operation relies on brushless DC motor-driven orbital motion (150–1200 rpm), coupled with a precision PID thermal regulation system that maintains setpoint stability within ±0.5 °C across the full 20–60 °C range. The device complies with IEC 61000-6-3 (EMC) and IEC 61010-1 (safety) standards for laboratory equipment and is constructed with corrosion-resistant stainless-steel housing and chemically inert polymer components suitable for routine exposure to aqueous buffers, ethanol, and mild disinfectants.

Key Features

• Optical plate detection system enables automatic start/stop—no manual button press required upon loading or unloading
• PID-controlled heating module ensures stable, uniform temperature distribution across the entire shaker surface
• Digital LED display provides real-time readout of speed (rpm), temperature (°C), and remaining timer duration
• Compact footprint (220 × 200 × 120 mm) allows seamless installation inside standard 4 °C refrigerators and non-CO₂ incubators
• Overload protection circuitry automatically deactivates the drive motor if total load exceeds 4.4 kg—preventing mechanical stress and ensuring long-term reliability
• Timer functionality supports both discrete intervals (1 minute to 99 hours 59 minutes) and continuous operation modes
• No external calibration required; factory-trimmed speed and temperature sensors meet ISO/IEC 17025 traceability guidelines for routine QC verification

Sample Compatibility & Compliance

The shaker accommodates standard ANSI/SBS-compliant microplates including 96-well, 384-well, and deep-well formats (up to 25 mL well volume), as well as PCR plates with rigid frames. It is not intended for use with loose tubes, flasks, or non-planar vessels. All electrical and thermal subsystems conform to UL 61010-1 and EN 61326-1 requirements for laboratory instrumentation. For regulated environments, the device supports GLP-compliant documentation through optional RS-232 serial output (with ASCII command protocol) enabling integration into LIMS or electronic lab notebook (ELN) systems. While not FDA 21 CFR Part 11 certified out-of-the-box, audit trail generation and user access logging can be implemented via external software interfacing.

Software & Data Management

This shaker operates as a standalone instrument without bundled PC software. However, its RS-232 interface (optional accessory) permits bidirectional communication using ASCII-based commands—for example, “SPEED=950” sets rpm, “TEMP=37” sets target temperature, and “QUERY?” returns current operational status. Third-party automation platforms—including LabVIEW, Python (pySerial), and MATLAB—can integrate the device into automated assay workflows. All parameter changes are stored in non-volatile memory and persist after power cycling. No firmware updates are field-serviceable; upgrades require authorized Thermo Fisher service centers per ISO 13485 quality system protocols.

Applications

• Enzyme-linked immunosorbent assay (ELISA) plate incubation with simultaneous shaking to accelerate antigen–antibody binding kinetics
• Cell-based assays requiring gentle agitation during staining, fixation, or wash steps in chilled conditions
• High-throughput screening (HTS) workflows where consistent mixing minimizes edge effects and improves intra-plate signal uniformity
• Molecular biology applications such as hybridization, probe labeling, and post-PCR cleanup under controlled thermal conditions
• Quality control testing of diagnostic reagents under accelerated stability protocols (ICH Q1A)
• Microbial suspension homogenization prior to OD₆₀₀ measurement or colony-forming unit (CFU) enumeration

FAQ

Can this shaker be used inside a CO₂ incubator?
No. The unit is rated for non-CO₂ environments only; elevated CO₂ concentrations may corrode internal electronics and compromise sensor accuracy.
Is the light-sensing mechanism affected by ambient lab lighting?
No. The infrared optical sensor operates at a fixed wavelength (850 nm) and includes ambient light compensation circuitry to prevent false triggers under typical fluorescent or LED illumination.
Does the device support multi-plate stacking?
No. Only one standard microplate may be loaded at a time. Stacking plates voids the overload protection and invalidates thermal uniformity specifications.
What maintenance is required?
Annual verification of speed and temperature accuracy using NIST-traceable calibrators is recommended. No lubrication or consumable parts are specified in the maintenance schedule.
Is the shaker compatible with sterile hood operation?
Yes—its sealed enclosure and absence of exposed vents allow safe use inside laminar flow hoods, provided ambient temperature remains within operating limits (15–35 °C).