LAUDA Varioshake Temperature-Controlled Orbital Shaker

Overview

The LAUDA Varioshake is a precision-engineered temperature-controlled orbital shaker designed for demanding life science and bioprocessing applications requiring simultaneous thermal regulation and reproducible, load-independent agitation. Operating on the principle of orbital shaking—where the platform rotates in a horizontal circular motion at a defined diameter—the Varioshake delivers uniform mixing, suspension, and aeration across diverse sample formats. Its integrated Peltier-based water-cooling system enables stable operation from 20 °C to 70 °C, extending usability beyond ambient-limited platforms and supporting temperature-sensitive protocols such as enzyme kinetics, microbial culture, protein expression, and cell-based assays. Engineered in Germany and built to industrial-grade durability, the Varioshake features a robust electrogalvanized steel chassis with corrosion-resistant powder coating, ensuring long-term stability in shared core facilities and GMP-aligned laboratories.

Key Features

• Orbital motion with selectable orbit diameters (10–32 mm) for optimized mixing intensity across low-volume microplates and high-capacity flasks.
• Microprecision temperature control with ±0.2 K stability and 0.1 °C resolution, validated per DIN EN ISO/IEC 17025 traceable calibration practices.
• Load-compensated drive system maintains constant rotational speed (20–250 rpm) regardless of vessel mass or fill volume—critical for assay reproducibility.
• Intelligent safety architecture: automatic deactivation of both heating and shaking functions upon door opening; dual-mode (visual + audible) low-temperature alarm with user-defined threshold.
• RS232 serial interface supports bidirectional communication with LIMS or laboratory automation systems, enabling remote parameter setting, real-time monitoring, and audit-ready data logging.
• Dual-tray compatibility (subject to height constraints ≤180 mm) increases throughput without compromising thermal homogeneity across platforms.

Sample Compatibility & Compliance

The Varioshake accommodates standard labware including Erlenmeyer flasks (up to 5 L), baffled shake flasks, deep-well microplates, and custom bioreactor vessels via optional clamping kits. Its chamber geometry and airflow management comply with ISO 13485 design controls for medical device manufacturing environments. While not intrinsically certified for IEC 61000-6-3 EMC immunity, the unit meets CE marking requirements for laboratory equipment under Directive 2014/30/EU (EMC) and 2014/35/EU (LVD). Temperature performance adheres to ASTM E2582–21 guidelines for orbital shaker validation, and its microprocessor-based timer satisfies GLP documentation requirements for time-critical incubation workflows.

Software & Data Management

The Varioshake operates autonomously via its embedded microcontroller and symbol-driven membrane interface—eliminating dependency on proprietary PC software for routine use. For integration into regulated environments, the RS232 port supports ASCII command protocol for scripting via Python, LabVIEW, or third-party SCADA platforms. All parameter changes, runtime events (e.g., door open/close, alarm triggers), and end-of-cycle signals are timestamped and exportable as CSV files. When connected to compliant data acquisition systems, the device supports 21 CFR Part 11–aligned electronic records—including user authentication logs, audit trails, and immutable event timestamps—facilitating FDA-submission readiness.

Applications

• Microbial and mammalian cell culture under controlled thermal and agitation conditions.
• Solubility and dissolution testing in pharmaceutical development (aligned with USP & Ph. Eur. methodologies).
• Enzyme activity profiling across temperature gradients with kinetic sampling intervals.
• Antibody production in suspension CHO cultures requiring consistent orbital shear profiles.
• Environmental microbiology studies involving soil slurry homogenization or biofilm disruption assays.
• Pre-analytical sample preparation for downstream LC-MS, NMR, or flow cytometry workflows.

FAQ

Does the Varioshake support programmable multi-step temperature or speed ramps?
No—the Varioshake is configured for single-setpoint operation. It does not include ramp/soak programming; users must manually adjust parameters between phases.
Is the water-cooling system self-contained, or does it require external chiller connection?
The unit integrates a closed-loop Peltier heat exchanger and internal reservoir; no external chiller is required for operation within its specified range.
Can the RS232 interface be used for real-time RPM feedback or only for setpoint control?
The interface supports readback of current temperature, setpoint, elapsed time, remaining time, and operational status—but does not report instantaneous RPM deviation due to its analog tachometer-free design.
What is the maximum flask size supported on the standard platform?
A single 5 L Erlenmeyer flask (with standard neck geometry) fits within the platform envelope; dual-flask configurations are limited to vessels ≤180 mm in height.
Is the Varioshake compatible with CO₂-enriched atmospheres?
No—it lacks gas-tight sealing or inlet/outlet ports; it is intended for ambient-air or humidified-air environments only.